Deposits
Known US deposits and occurrences
The geological base of the tracked chains: sites recorded by the U.S. Geological Survey, grouped by commodity and state and mapped, plus the Earth MRI focus areas where USGS is acquiring new mapping. Projects that have advanced to development appear as facilities.
Rare earths deposits
169 sites from the USGS USMIN rare earth element occurrence database (ver. 4.0, June 2019): 47 carry published resource estimates and 17 have recorded past production. See the Rare earths hub for the rest of that chain.
Alaska
| Site | Commodities | Data on record |
|---|---|---|
| Aichilik River | rare earth elements | geology |
| Bokan Mountain | rare earth elements; uranium; thorium; niobium; zirconium; zinc; titanium; beryllium; tin; tantalum; lead; strontium; hafnium; zinc; tin | resource estimates · past production · geology |
| Boston Ridge | rare earth elements; thorium; uranium | geology |
| Cape Darby | rare earth elements; uranium; tungsten | location only |
| Clear Creek | rare earth elements; uranium | geology |
| Dora Bay | rare earth elements | geology |
| Draken Claims | gold; thorium; tungsten; uranium; rare earth elements; silver; arsenic; copper; lead; tungsten | geology |
| Eudialyte | rare earth elements; zirconium; thorium; uranium | geology |
| Golovnin Bay | rare earth elements; uranium; tungsten | location only |
| Hot Springs Creek | rare earth elements; thorium; uranium; tungsten | geology |
| Karshner Creek | rare earth elements; titanium; zirconium | geology |
| Kilolitna River | rare earth elements; tin; niobium; tungsten; tantalum; zirconium | geology |
| Kwiniuk River | copper; rare earth elements; tungsten | location only |
| Lucky Six | copper; lead; rare earth elements; thorium; uranium; zirconium | geology |
| No Name Creek | rare earth elements; tin; tungsten; uranium; niobium; titanium; tungsten; zirconium; gold | resource estimates · geology |
| Paystreak and Marker Veins | uranium; thorium; rare earth elements; molybdenum | resource estimates · geology |
| Ray River | tin; rare earth elements; gold; niobium; titanium; tungsten; zirconium | resource estimates · geology |
| Ruby Creek | rare earth elements; thorium | geology |
| Salmon Bay | rare earth elements | geology |
| Section 35 | beryllium; niobium; thorium; uranium; zirconium; rare earth elements | geology |
| Tofty Ridge | rare earth elements; niobium; silver; uranium; gold; tin | geology |
| Unnamed (east fork of Kilolitna River) | rare earth elements; tin; niobium; tungsten; tantalum; zirconium | geology |
| Unnamed (east of Berg Mountain) | rare earth elements | location only |
| Unnamed (east of Eagle Creek) | rare earth elements; thorium; uranium | geology |
| Unnamed (Half-Way Pillar) | rare earth elements; lead | geology |
| Unnamed (in Zane Hills) | rare earth elements; thorium; uranium | location only |
| Unnamed (near Mallard Bay) | gold; copper; rare earth elements; uranium; zinc | geology |
| Unnamed (near Salmon Bay) | rare earth elements; thorium; uranium; molybdenum | geology |
| Unnamed (near Salmon River) | rare earth elements; zinc; niobium; titanium; zinc; arsenic; strontium; thorium; yttrium; zirconium | geology |
| Unnamed (near Swift River) | rare earth elements | geology |
| Unnamed (north shore, Stone Rock Bay) | gold; copper; rare earth elements; uranium; zinc | geology |
| Unnamed (northeast of lower Sue Creek) | cerium; lanthanum; samarium; thorium; uranium; tungsten; zirconium; gold; copper; mercury; lead; silver | past production · geology |
| Unnamed (northeast ridge of Caribou Mountain) | rare earth elements; thorium; uranium | location only |
| Unnamed (on Rock Creek) | rare earth elements; uranium | geology |
| Unnamed (on Slate Creek) | rare earth elements; thorium; uranium | geology |
| Unnamed (tributaries to Clear Creek) | rare earth elements; tin; uranium; tungsten | geology |
| Unnamed (tributary to Vulcan Creek) | rare earth elements; uranium | geology |
| Unnamed (upper Idaho Gulch) | niobium; silver; rare earth elements; uranium; zirconium; phosphorus pentoxide | resource estimates |
| William Henry | copper; lead; rare earth elements; zinc; gold; uranium | geology |
| Windy Fork Placer | cerium; lanthanum; niobium; titanium; zirconium; iron; tin; thorium; uranium | location only |
Arizona
| Site | Commodities | Data on record |
|---|---|---|
| La Paz | rare earth elements | resource estimates · geology |
Arkansas
| Site | Commodities | Data on record |
|---|---|---|
| Magnet Cove District | barite; titanium; vanadium; niobium; rare earth elements | geology |
California
| Site | Commodities | Data on record |
|---|---|---|
| Mountain Pass | rare earth elements; gold | resource estimates · past production · geology |
| Music Valley | thorium; rare earth elements | resource estimates · geology |
Colorado
| Site | Commodities | Data on record |
|---|---|---|
| Climax | molybdenum; tungsten; rhenium; platinum-group elements; tin; rare earth elements | resource estimates · past production · geology |
| Climax District | molybdenum; tungsten; rhenium; platinum-group elements; tin; rare earth elements | location only |
| Iron Hill Carbonatite Complex | rare earth elements; niobium; uranium; vanadium; thorium; titanium; iron; vermiculite | resource estimates · geology |
| Powderhorn District | niobium; tantalum; titanium; rare earth elements; iron; vanadium | resource estimates · past production · geology |
| Powderhorn Exploration Project | rare earth elements | geology |
| Wet Mountains Area | thorium; rare earth elements | resource estimates · geology |
Florida
| Site | Commodities | Data on record |
|---|---|---|
| Boulogne | titanium; zircon; rare earth elements (in monazite) | resource estimates · past production · geology |
| Green Cove Springs | ilmenite; rutile; zircon; rare earth elements (in monazite); staurolite; leucoxene; heavy minerals | past production · geology |
| Jacksonville | ilmenite; rutile; zircon; rare earth elements (in monazite); garnet; xenotime; heavy minerals | past production · geology |
| Little Talbot Island | rare earth elements (in monazite); thorium (in monazite) | geology |
| Melbourne | ilmenite; rutile; zircon; rare earth elements (in monazite) | geology |
| Ponte Vedra | ilmenite; rutile; zircon; rare earth elements (in monazite) | past production · geology |
| Trail Ridge | zirconium; hafnium; titanium; rare earth elements (in heavy minerals); uranium; thorium; niobium; zinc; titanium; beryllium; tin; tantalum; lead; strontium | resource estimates · geology |
| Vero Beach | ilmenite; rutile; zircon; rare earth elements (in monazite and xenotime); garnet | geology |
Georgia
| Site | Commodities | Data on record |
|---|---|---|
| Altama | titanium; zircon; rare earth elements (in monazite) | geology |
| Cabin Bluff | titanium; zircon; rare earth elements (in monazite) | resource estimates · geology |
| Cumberland Island | titanium; rare earth elements (in monazite) | geology |
| Folkston | titanium; zircon; rare earth elements (in monazite) | resource estimates · past production · geology |
Idaho
| Site | Commodities | Data on record |
|---|---|---|
| Bear Valley Monazite Placer District | rare earth elements (in monazite); yttrium (in euxenite); tantalum (in euxenite); niobium (in euxenite); thorium; uranium | resource estimates |
| Blackfoot Bridge | phosphate; rare earth elements | resource estimates |
| Boise Basin Monazite Placer District | rare earth elements (in monazite); garnet; ilmenite; thorium; zircon | resource estimates |
| Burgdorf-Warren Monazite Placer District | rare earth elements (in monazite); gold; thorium; uranium | resource estimates |
| Caldwell Canyon | phosphate; rare earth elements | resource estimates |
| Champ | phosphate; rare earth elements | location only |
| Clearwater River Monazite Placer District | rare earth elements (in monazite) | location only |
| Conda | phosphate; rare earth elements | location only |
| Diamond Creek District | rare earth elements; thorium; gold | resource estimates · geology |
| Dismal Swamp Monazite Placer District | rare earth elements (in monazite) | location only |
| Dixie-Florence Monazite Placer District | rare earth elements (in monazite) | location only |
| Elk City-Newsome Monazite Placer District | rare earth elements (in monazite); gold; garnet; zircon; ilmenite; thorium | resource estimates |
| Gay-South Forty | phosphate; rare earth elements | resource estimates |
| Hall Mountain Group | rare earth elements; thorium | resource estimates · geology |
| Henry | phosphate; rare earth elements | resource estimates |
| Husky | phosphate; rare earth elements | resource estimates |
| Lemhi Pass District | rare earth elements; thorium | resource estimates · geology |
| Long Valley Monazite Placer District | rare earth elements (in monazite); ilmenite; zircon; garnet; thorium (in monazite); thorium; uranium | resource estimates · past production |
| Lucky Horseshoe | rare earth elements; thorium | geology |
| Maybe Canyon | phosphate; rare earth elements | resource estimates |
| Mineral Hill District | rare earth elements; thorium | geology |
| Monumental Summit | rare earth elements | resource estimates · geology |
| Mountain Fuel | phosphate; rare earth elements | resource estimates |
| North Henry | phosphate; rare earth elements | resource estimates |
| Rock Creek-Camp Creek Monazite Placer District | rare earth elements (in monazite) | location only |
| Salmon River Monazite Placer District | rare earth elements (in monazite) | location only |
| Silver Queen | rare earth elements; thorium | geology |
| Smokey Canyon | phosphate; rare earth elements | resource estimates |
| Stanley Basin Monazite Placer District | rare earth elements (in monazite) | location only |
| Swan Lake Gulch | phosphate; rare earth elements | location only |
| Trail Creek | phosphate; rare earth elements | resource estimates |
| Wooley Valley | phosphate; rare earth elements | location only |
Illinois
| Site | Commodities | Data on record |
|---|---|---|
| Hicks Dome | fluorite; beryllium; rare earth elements; thorium | resource estimates · geology |
Missouri
| Site | Commodities | Data on record |
|---|---|---|
| Pea Ridge | iron; magnetite; pyrite; rare earth elements | resource estimates · past production · geology |
Montana
| Site | Commodities | Data on record |
|---|---|---|
| Last Chance | rare earth elements; thorium | resource estimates · geology |
| Rocky Boy | rare earth elements | geology |
| Snowbird | rare earth elements | geology |
| Southern Ravalli County | rare earth elements; niobium | geology |
Nebraska
| Site | Commodities | Data on record |
|---|---|---|
| Elk Creek | niobium; scandium; titanium; rare earth elements | resource estimates · geology |
Nevada
| Site | Commodities | Data on record |
|---|---|---|
| Crescent District | silver; gold; lead; copper; turquoise; molybdenum; vanadium; beryllium; thorium; uranium; perlite; rare earth elements | geology |
| Thor | rare earth elements | geology |
New Jersey
| Site | Commodities | Data on record |
|---|---|---|
| Scrub Oaks | iron; rare earth elements | past production · geology |
New Mexico
| Site | Commodities | Data on record |
|---|---|---|
| Caballo Mountains District | lead; fluorine; manganese; gold; silver; iron; copper; uranium; molybdenum; vanadium; thorium; barium; rare earth elements; tungsten; niobium; titanium; platinum group elements; beryllium; zinc | location only |
| Capitan Mountains District | thorium; rare earth elements; iron; uranium; manganese; coal; copper; gold; silver; beryllium; asbestos; fluorine; garnet | location only |
| Chupadera Mountains District | gold; silver; copper; lead; zinc; barium; uranium; thorium; niobium; titanium; rare earth elements | location only |
| Cornudas Mountains District | rare earth elements; nepheline syenite; silver; beryllium; gold; uranium; thorium; niobium; zirconium; zeolites | location only |
| El Porvenir District | molybdenum; uranium; mica; rare earth elements; copper; silver; gold; thorium; fluorine; tungsten; bismuth; tantalum; niobium; mica; asbestos; beryllium | location only |
| Gallinas Mountains District | gold; silver; copper; fluorine; iron; zinc; lead; rare earth elements; uranium; thorium; tellurium; molybdenum; asbestos | past production |
| Gallinas Mountains Project | rare earth elements | geology |
| Laughlin Peak District | rare earth elements; gold; silver; uranium; thorium; niobium; iron; beryllium; zeolites | location only |
| Lemitar Mountains District | copper; lead; barium; silver; manganese; uranium; rare earth elements; fluorine; zinc; titanium; niobium; thorium | location only |
| Pajarito District | zircon; rare earth elements; iron; fluorine | location only |
| Pajarito Mountain | zirconium; rare earth elements | resource estimates · geology |
| Petaca District | mica; niobium; tantalum; beryllium; quartz; feldspar; kyanite; rare earth elements; uranium; tin; thorium; copper; bismuth; fluorine; molybdenum; asbestos; pyrophyllite; garnet | location only |
| White Signal District | copper; uranium; gold; silver; lead; bismuth; fluorine; radium; garnet; rare earth elements; thorium; zinc; niobium; tantalum; turquoise; beryllium; barium; mica; tellurium | past production |
New York
| Site | Commodities | Data on record |
|---|---|---|
| Cheever | iron; rare earth elements | geology |
| Mineville District | iron; thorium; uranium; phosphoric acid; rare earth elements | resource estimates · geology |
| Mineville Group | iron; rare earth elements | geology |
| Pelfshire | iron; rare earth elements | geology |
| Port Leyden | iron; titanium; rare earth elements | geology |
| Sherman | iron; rare earth elements | geology |
| Smith | iron; thorium; uranium; phosphorus; rare earth elements | geology |
North Carolina
| Site | Commodities | Data on record |
|---|---|---|
| Buffalo Creek | rare earth elements (in monazite); rutile; ilmenite; zircon | geology |
| Christy-Destiny | rare earth elements (in monazite and xenotime); gold; sand; gravel | geology |
| First Broad River | rare earth elements (in monazite); rutile; ilmenite; zircon | geology |
| Knob Creek | rare earth elements (in monazite); rutile; ilmenite; zircon | geology |
| Sandy Run Creek | rare earth elements (in monazite); rutile; ilmenite; zircon | geology |
| Silver Creek | rare earth elements (in monazite); gold | geology |
| South Muddy Creek | rare earth elements (in monazite); gold | geology |
South Carolina
| Site | Commodities | Data on record |
|---|---|---|
| Big Generostee Creek | rare earth elements (in monazite); gold | geology |
| Broad River | rare earth elements (in monazite) | geology |
| Hilton Head Island | rare earth elements (in monazite); ilmenite; rutile; zircon | resource estimates · geology |
| Hollow Creek | rare earth elements (in monazite); gold | geology |
| Horse Creek | rare earth elements (in monazite) | geology |
| North Tyger River | rare earth elements (in monazite); rutile; ilmenite; zircon | geology |
| Rabon Creek | rare earth elements (in monazite); rutile; ilmenite; zircon | geology |
| Thicketty Creek | rare earth elements (in monazite); rutile; ilmenite; zircon | geology |
Tennessee
| Site | Commodities | Data on record |
|---|---|---|
| Oak Grove | heavy minerals; rare earth elements | resource estimates · geology |
| Silica | phosphate; rare earth elements | resource estimates |
Texas
| Site | Commodities | Data on record |
|---|---|---|
| Rode Ranch | rare earth elements | geology |
| Round Top | rare earth elements; beryllium; niobium; hafnium; tantalum; tin; uranium; thorium; aluminum; gallium; iron; lithium; magnesium; manganese; potassium; rare-earth elements; scandium; sodium; yttrium; zirconium | resource estimates · geology |
Virginia
| Site | Commodities | Data on record |
|---|---|---|
| Little Friar Mountain | rare earth elements | location only |
Wyoming
| Site | Commodities | Data on record |
|---|---|---|
| Bald Mountain | gold; titanium minerals; rare earth elements; thorium; zircon | resource estimates · geology |
| Bear Cabin Creek | phosphate; rare earth elements | geology |
| Bear Lodge | rare earth elements; thorium | resource estimates · geology |
| Bear Lodge District | rare earth elements; gold | location only |
| Beaver Creek | rare earth elements | past production · geology |
| Cottonwood Creek | heavy minerals; rare earth elements | geology |
| Crystal Creek | phosphate; rare earth elements | geology |
| Crystal Creek Canyon | phosphate; rare earth elements | geology |
| Crystal Peak | phosphate; rare earth elements | geology |
| Frontier Formation-Spring Gap | heavy minerals; rare earth elements | geology |
| Gafco | rare earth elements; uranium; thorium | geology |
| Granite Creek | phosphate; rare earth elements | geology |
| Grass Creek | heavy minerals; rare earth elements | geology |
| Middle Fork Pine Creek | phosphate; rare earth elements | geology |
| North Sheldon Gulch | phosphate; rare earth elements | geology |
| Onemile Creek | uranium; rare earth elements; thorium | geology |
| Platt | uranium; rare earth elements | past production · geology |
| Ranger | uranium; rare earth elements; thorium | geology |
| Raymond Canyon | phosphate; rare earth elements | geology |
| Snow King Mountain | phosphate; rare earth elements | geology |
| Spring Gap | heavy minerals; rare earth elements | geology |
| Table Mountain | phosphate; rare earth elements | geology |
| Tosi Creek | phosphate; rare earth elements | geology |
| Unnamed (Little Grizzly Basin) | phosphate; rare earth elements | geology |
| Unnamed (S of Shorty Creek) | phosphate; rare earth elements | geology |
Graphite deposits
10 sites from the USGS USMIN graphite deposits data release (2022): 4 carry published resource estimates and 8 have recorded past production. See the Graphite hub for the rest of that chain.
Alabama
| Site | Commodities | Data on record |
|---|---|---|
| Clay-Coosa-Chilton graphite district | graphite | past production |
| Coosa | graphite | resource estimates · geology |
Alaska
| Site | Commodities | Data on record |
|---|---|---|
| Graphite Creek | graphite | resource estimates · past production · geology |
| Kigluaik Mountains graphite district | graphite | location only |
Colorado
| Site | Commodities | Data on record |
|---|---|---|
| Quartz Creek district | copper; gold; graphite; lead; silver | past production · geology |
Montana
| Site | Commodities | Data on record |
|---|---|---|
| Blacktail district | copper; gold; graphite; silver | past production |
| Crystal Graphite | graphite | past production · geology |
New York
| Site | Commodities | Data on record |
|---|---|---|
| Eastern Adirondack Mountains | graphite | resource estimates · past production |
Pennsylvania
| Site | Commodities | Data on record |
|---|---|---|
| Chester-Allentown | graphite | past production |
Texas
| Site | Commodities | Data on record |
|---|---|---|
| Southwestern Graphite | graphite | resource estimates · past production · geology |
Gallium deposits
4 sites from the USGS USMIN gallium deposits data release (2021): 2 carry published resource estimates and 1 have recorded past production. See the Gallium hub for the rest of that chain.
Texas
| Site | Commodities | Data on record |
|---|---|---|
| Round Top | rare earth elements; beryllium; niobium; hafnium; tantalum; tin; uranium; thorium; aluminum; gallium; iron; lithium; magnesium; manganese; potassium; rare-earth elements; scandium; sodium; yttrium; zirconium | resource estimates · geology |
| Sierra Blanca mining area | aluminum; beryllium; gallium; hafnium; iron; lithium; magnesium; manganese; niobium; potassium; rare-earth elements; scandium; sodium; tantalum; thorium; tin; uranium; yttrium; zirconium | location only |
Utah
| Site | Commodities | Data on record |
|---|---|---|
| Apex | arsenic; copper; gallium; germanium; iron; lead; silver; zinc | resource estimates · past production |
| Tutsagubet Mining District | arsenic; copper; gallium; germanium; iron; lead; silver; zinc | location only |
Germanium deposits
2 sites from the USGS USMIN germanium deposits data release (2020): 1 carry published resource estimates and 1 have recorded past production. See the Germanium hub for the rest of that chain.
Utah
| Site | Commodities | Data on record |
|---|---|---|
| Apex | arsenic; copper; gallium; germanium; iron; lead; silver; zinc | resource estimates · past production |
| Tutsagubet Mining District | arsenic; copper; gallium; germanium; iron; lead; silver; zinc | location only |
Lithium deposits
21 sites from the USGS USMIN USGS 2020 selected-sites dataset: 16 carry published resource estimates and 6 have recorded past production. See the Lithium hub for the rest of that chain.
Arkansas
| Site | Commodities | Data on record |
|---|---|---|
| Regional Smackover brine | lithium; bromine | location only |
| Smackover-Lanxess | lithium; bromine | resource estimates · past production |
| Smackover-Tetra | lithium | resource estimates · geology |
California
| Site | Commodities | Data on record |
|---|---|---|
| Fort Cady | lithium; boron; gypsum | resource estimates · past production · geology |
| Salton Sea | lithium; potash; boron; zinc; lead; sodium; potassium; calcium; magnesium; strontium; barium; rubidium; cesium; iron; manganese; silica; chloride | resource estimates · geology |
| Salton Trough | lithium; potash; boron; zinc; lead; sodium; potassium; calcium; magnesium; strontium; barium; rubidium; cesium; iron; manganese; silica; chloride | location only |
| Searles Lake | lithium; tungsten; salt; borax | resource estimates · past production · geology |
Nevada
| Site | Commodities | Data on record |
|---|---|---|
| Bonnie Claire | lithium | resource estimates |
| Clayton Valley brine operation | lithium; potash | resource estimates · past production · geology |
| Clayton Valley South | lithium | resource estimates · geology |
| Clayton Valley-Cypress | lithium | resource estimates · geology |
| Clayton Valley-Zeus | lithium | resource estimates |
| Kings Valley | lithium; potassium; sodium; fluorine | resource estimates · geology |
| McDermitt Caldera | lithium | location only |
| Rhyolite Ridge | lithium; boron; potassium | resource estimates · geology |
| Silver Peak Marsh | lithium carbonate; sodium chloride; borates; potash | location only |
North Carolina
| Site | Commodities | Data on record |
|---|---|---|
| Bessemer City | lithium | resource estimates · past production · geology |
| Kings Mountain | lithium | resource estimates · past production · geology |
| Kings Mountain District | lithium; tin | location only |
| Piedmont | lithium; quartz; feldspar; mica | resource estimates · geology |
Utah
| Site | Commodities | Data on record |
|---|---|---|
| Great Salt Lake | lithium; magnesium; salt; chlorine; sulfate of potash | resource estimates |
Where USGS is looking next: rare earths focus areas
Separate from known deposits, the USGS Earth Mapping Resources Initiative designates focus areas where new geologic mapping and geophysics are being acquired because the mineral systems are favorable. These are areas of interest, not discoveries.
| Focus area | State(s) | Mineral system | Deposit type(s) |
|---|---|---|---|
| Alabama bauxite | Alabama | Chemical weathering | Bauxite |
| Pennsylvanian Phosphate, Black Shale, Underclay | Alabama, Arkansas, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Michigan, Missouri, Nebraska, New York, Ohio, Oklahoma, Pennsylvania, Tennessee, Texas, Virginia, West Virginia | Marine chemocline | Black shale; Phosphate |
| Pennsylvanian Phosphate, Black Shale, Underclay | Alabama, Arkansas, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Michigan, Missouri, Nebraska, New York, Ohio, Oklahoma, Pennsylvania, Tennessee, Texas, Virginia, West Virginia | Chemical weathering | Clay |
| Upper Devonian Phosphate | Alabama, Arkansas, Georgia, Illinois, Indiana, Iowa, Kentucky, Maryland, Michigan, Mississippi, Missouri, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, West Virginia | Marine chemocline | Black shale; Iron-manganese; Phosphate |
| Fall Zone Placers | Alabama, Delaware, Georgia, Maryland, New Jersey, North Carolina, Pennsylvania, South Carolina, Virginia | Placer | Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
| Alleghanian-NeoAcadian regolith | Alabama, Georgia, North Carolina, South Carolina, Virginia | Chemical weathering | Regolith (Ion adsorption) REE |
| Piedmont fluvial placers | Alabama, Georgia, North Carolina, South Carolina, Virginia | Placer | Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
| Upper Ordovician Phosphate (Rawtheyan and Richmondian) | Alabama, Illinois, Indiana, Iowa, Kentucky, Michigan, Minnesota, Missouri, Ohio, Oklahoma, Tennessee, Wisconsin | Marine chemocline | Black shale; Iron-manganese; Phosphate |
| Darby-Hogatza REE | Alaska | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Darby-Hogatza SsU-V-Co | Alaska | Meteoric recharge | Sandstone uranium |
| Eastern Brooks Range-Old Crow PorphMo-W | Alaska | Climax-type | Porphyry molybdenum |
| Kokrines-Hodzana Placers | Alaska | Placer | Cassiterite; Monazite/xenotime |
| Kokrines-Hodzana REE | Alaska | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Kokrines-Hodzana SsU-V-Co | Alaska | Meteoric recharge | Sandstone uranium |
| Kuskokwim-White Mountains REE | Alaska | Magmatic REE | Carbonatite |
| Kuskokwim-White Mountains SsU-V-Co | Alaska | Meteoric recharge | Sandstone uranium |
| Northern Alaska Range REE | Alaska | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Northern Alaska Range SsU-V-Co | Alaska | Meteoric recharge | Sandstone uranium |
| Placer Au | Alaska | Placer | Cassiterite; Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; PGE; Zircon |
| Placer Au and PGE | Alaska | Placer | Cassiterite; Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; PGE; Zircon |
| Placer Au and Sn | Alaska | Placer | Cassiterite; Gold; Monazite/xenotime; PGE; Zircon |
| Placer Au and Ti | Alaska | Placer | Cassiterite; Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; PGE; Zircon |
| Placer PGE and Au | Alaska | Placer | Cassiterite; Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; PGE; Zircon |
| Porcupine River REE | Alaska | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Porcupine River SsU-V-Co | Alaska | Meteoric recharge | Sandstone uranium |
| Southeast Alaska Coast Mountains PorphMo-W | Alaska | Climax-type | Porphyry molybdenum |
| Southeastern Alaska REE | Alaska | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Southeastern Alaska SsU-V-Co | Alaska | Meteoric recharge | Sandstone uranium |
| Triassic Phosphate REE | Alaska | Marine chemocline | Phosphate |
| Upper Mississippian (Visean) Phosphate REE | Alaska | Marine chemocline | Phosphate |
| Western Alaska Range REE | Alaska | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Western Alaska Range SsU-V-Co | Alaska | Meteoric recharge | Sandstone uranium |
| Yukon-Tanana REE | Alaska | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Yukon-Tanana SsU-V-Co | Alaska | Meteoric recharge | Sandstone uranium |
| Artillery Mountains manganese | Arizona | Volcanogenic seafloor | Manganese oxide (layers, crusts, nodules) |
| Cameron area uranium | Arizona | Meteoric recharge | Sandstone uranium |
| La Paz | Arizona | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Lower Colorado River IOCG | Arizona, California | IOA-IOCG | Iron oxide copper gold; Skarn iron |
| Arizona-New Mexico Cretaceous placers | Arizona, Colorado, New Mexico | Placer | Columbite/tantalite; Ilmenite/rutile/leucoxene; Monazite/xenotime; Uraninite, autunite-group minerals; Zircon |
| Colorado Plateau sandstone uranium | Arizona, Colorado, New Mexico, Utah | Meteoric recharge | Sandstone uranium |
| Southwest Laramide Porphyry Belt | Arizona, New Mexico | Porphyry Cu-Mo-Au | Greisen; Lithocap alunite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; Porphyry/skarn molybdenum |
| Northwest Arizona and southwest Utah uranium breccia pipes | Arizona, Utah | Basin brine path | Uranium (unconformity and breccia pipe) |
| Arkansas Bauxite Region | Arkansas | Chemical weathering | Bauxite |
| Granite Mountain syenite | Arkansas | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Magnet Cove District-Potash Sulphur Springs | Arkansas | Magmatic REE | Carbonatite |
| Rison anomaly | Arkansas | Magmatic REE | Carbonatite |
| South-Central IOA-IOCG province | Arkansas, Illinois, Iowa, Missouri, Ohio, Wisconsin | IOA-IOCG | Iron oxide apatite; Iron oxide copper gold |
| Texas Coastal Plain uranium | Arkansas, Louisiana, Texas | Meteoric recharge | Sandstone uranium |
| Fayetteville Shale; Upper Mississippian (Serpukhovian) Phosphate | Arkansas, Missouri, Oklahoma | Marine chemocline | Phosphate |
| Middle-Late Miocene Phosphate | California | Marine chemocline | Phosphate |
| Music Valley | California | Metamorphic | Gneiss REE (monazite, xenotime) |
| San Gabriel Mountains anorthosite | California | Mafic magmatic | Iron-titanium oxide |
| Jurassic Arc | California, Nevada | IOA-IOCG | Iron oxide apatite; Iron oxide copper gold |
| Mountain Pass | California, Nevada | Magmatic REE | Carbonatite |
| California Coast Ranges massive sulfide | California, Oregon, Washington | Volcanogenic seafloor | Copper-zinc sulfide; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide; Zinc-copper sulfide |
| Brown Derby | Colorado | Porphyry Sn (granite-related) | Pegmatite LCT |
| Centennial Cone Prospect | Colorado | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Climax-Sweet Home | Colorado | Climax-type | Greisen; Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Coal REE deposits | Colorado | Chemical weathering | Regolith (Ion adsorption) REE |
| Denver Basin | Colorado | Meteoric recharge | Sandstone uranium |
| Entrada | Colorado | Meteoric recharge | Sandstone uranium |
| Fox Hills Sandstone heavy mineral placers | Colorado | Placer | Garnet; Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
| Hahns Peak | Colorado | Climax-type | Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Maybell | Colorado | Meteoric recharge | Sandstone uranium |
| Meeker | Colorado | Meteoric recharge | Sandstone uranium |
| Mt. Emmons-Redwell Basin | Colorado | Climax-type | Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Pikes Peak, St. Peter’s Dome (Proterozoic) | Colorado | Climax-type | Greisen-S-R beryllium; Pegmatite NYF |
| Powderhorn District | Colorado | Magmatic REE | Carbonatite; Fluorspar |
| Summitville | Colorado | Climax-type | Lithocap alunite; Polymetallic sulfide S-R-V-IS |
| Tallahassee Creek | Colorado | Meteoric recharge | Sandstone uranium |
| Turkey Creek | Colorado | Meteoric recharge | Sandstone uranium |
| Twin Cedars, Big Bertha, South Platte pegmatites | Colorado | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Wet Mountains | Colorado | Mafic magmatic | Iron-titanium oxide; Nickel-copper-PGE sulfide |
| Wet Mountains | Colorado | Magmatic REE | Carbonatite; Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Winfield Peak-Antero | Colorado | Climax-type | Pegmatite NYF; Porphyry molybdenum |
| Phosphoria Formation | Colorado, Idaho, Montana, Nevada, Utah, Wyoming | Marine chemocline | Black shale; Phosphate |
| Medicine Bow Mountains | Colorado, Wyoming | Mafic magmatic | Chromite; Iron-titanium oxide; Nickel-copper-PGE sulfide |
| Medicine Bow Mountains | Colorado, Wyoming | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Medicine Bow Mountains | Colorado, Wyoming | Volcanogenic seafloor | Barite; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide |
| Medicine Bow Mountains | Colorado, Wyoming | Placer | Monazite/xenotime; Uraninite, autunite-group minerals |
| Sierra Madre | Colorado, Wyoming | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Sierra Madre | Colorado, Wyoming | Placer | Monazite/xenotime; Uraninite, autunite-group minerals |
| Sierra Madre | Colorado, Wyoming | Volcanogenic seafloor | Barite; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide |
| Lower Shoreline Placers | Delaware, Florida, Georgia, Maryland, New Jersey, North Carolina, South Carolina, Virginia | Placer | Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
| Pennsylvania fluvial placers | Delaware, Maryland, Pennsylvania | Placer | Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
| Miocene-Pliocene phosphate strata | Florida, Georgia, Maryland, North Carolina, South Carolina, Virginia | Marine chemocline | Phosphate |
| Georgia bauxite | Georgia | Chemical weathering | Bauxite |
| Middle Shoreline Placers | Georgia, Maryland, North Carolina, South Carolina, Virginia | Placer | Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
| Blue Ridge placers | Georgia, North Carolina, South Carolina, Tennessee | Placer | Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime |
| South Carolina/Georgia kaolin deposits | Georgia, South Carolina | Chemical weathering | Clay |
| Hawaii bauxite | Hawaii | Chemical weathering | Bauxite |
| CuMo-Little Falls mineral districts | Idaho | Porphyry Cu-Mo-Au | Porphyry/skarn molybdenum |
| Hall Mountain mineral district | Idaho | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Idaho Cobalt Belt | Idaho | IOA-IOCG | Iron oxide copper gold; Polymetallic sulfide S-R-V |
| Idaho Critical Mineral Placers | Idaho | Placer | Columbite/tantalite; Garnet; Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
| Payette National Forest manganese | Idaho | Volcanogenic seafloor | Manganese oxide (layers, crusts, nodules) |
| Stanley-Challis uranium district | Idaho | Meteoric recharge | Granite uranium; Sandstone uranium |
| Yellow Pine/Stibnite Mining District | Idaho | Metamorphic | Gneiss REE (monazite, xenotime) |
| Lemhi Pass mineral district | Idaho, Montana | Magmatic REE | Hybrid Th-REE-Fe veins and replacements |
| Sheep Creek-Mineral Hill | Idaho, Montana | Magmatic REE | Carbonatite; Hybrid Th-REE-Fe veins and replacements |
| Washington-Idaho clay | Idaho, Washington | Chemical weathering | Clay |
| Hicks Dome Intrusion | Illinois | Hybrid magmatic REE / basin brine path | Fluorspar |
| Midwest Permian Ultramafic Dike District | Illinois, Indiana, Kentucky | Magmatic REE | Carbonatite |
| Midwest Permian Ultramafic Dike District | Illinois, Indiana, Kentucky | Chemical weathering | Regolith (Ion adsorption) REE |
| Illinois-Kentucky Fluorspar District | Illinois, Kentucky | Hybrid magmatic REE / basin brine path | Fluorspar |
| Spencer Intrusive Complex | Iowa | IOA-IOCG | Iron oxide apatite; Iron oxide copper gold |
| Non-Midcontinent Rift mafic/ultramafic intrusions | Iowa, Michigan, Minnesota | Mafic magmatic | Iron-titanium oxide; Nickel-copper-PGE sulfide |
| Archean gneiss terranes | Iowa, Michigan, Minnesota, Nebraska, South Dakota, Wisconsin | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Post-Penokean Geon 17 magmatic rocks | Iowa, Michigan, Minnesota, Wisconsin | IOA-IOCG | Iron oxide apatite; Iron oxide copper gold |
| Paleoproterozoic weathering beneath mature quartzites | Iowa, Minnesota, South Dakota, Wisconsin | Chemical weathering | Regolith (Ion adsorption) REE |
| Northeast Iowa intrusive complex (NEIIC) | Iowa, Minnesota, Wisconsin | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Kansas Lamproite | Kansas | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Elk Creek region | Kansas, Nebraska | Magmatic REE | Carbonatite |
| Central Kentucky Phosphate District | Kentucky | Chemical weathering | Regolith (Ion adsorption) REE |
| McNairy Sand placers | Kentucky, Mississippi, Missouri, Tennessee | Placer | Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
| Kennebec River barrier beaches | Maine | Placer | Garnet; Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
| Litchfield syenite | Maine | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Catoctin Formation metavolcanics in Maryland | Maryland | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Eastern Piedmont Devonian granitoids | Maryland | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Neoproterozoic regolith | Maryland, North Carolina, Tennessee, Virginia, West Virginia | Chemical weathering | Regolith (Ion adsorption) REE |
| Massachusetts Hawley mineral belt | Massachusetts | Volcanogenic seafloor | Manganese oxide (layers, crusts, nodules); Polymetallic sulfide |
| Humboldt Granite | Michigan | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Pembine-Wausau and Minnesota Paleoproterozoic | Michigan, Minnesota, Wisconsin | Volcanogenic seafloor | Barite; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide; Zinc-copper sulfide |
| Mesoproterozoic Phosphate | Michigan, Wisconsin | Marine chemocline | Phosphate |
| Midcontinent Rift mafic-ultramafic satellite intrusions | Michigan, Wisconsin | Mafic magmatic | Iron-titanium oxide; Nickel-copper-PGE sulfide |
| Peavey Pond Complex | Michigan, Wisconsin | IOA-IOCG | Iron oxide apatite; Iron oxide copper gold |
| Western Upper Peninsula, IOCG | Michigan, Wisconsin | IOA-IOCG | Iron oxide apatite; Iron oxide copper gold |
| Midcontinent Rift layered Ti-Fe in the Duluth Complex | Minnesota | Mafic magmatic | Iron-titanium oxide |
| Midcontinent Rift oxide-ultramafic intrusions (OUIs) | Minnesota | Mafic magmatic | Iron-titanium oxide; Nickel-copper-PGE sulfide |
| Neoarchean Greenstone Belts of Minnesota, North Dakota and South Dakota | Minnesota, North Dakota, South Dakota | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Cretaceous weathering of Archean and Paleoproterozoic rocks | Minnesota, South Dakota | Chemical weathering | Regolith (Ion adsorption) REE |
| Missouri Cheltenham Fireclay District | Missouri | Chemical weathering | Clay |
| Southeast Missouri Iron Metallogenic Province | Missouri | IOA-IOCG | Iron oxide apatite; Iron oxide copper gold |
| Adel Mountain Volcanics | Montana | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Bearpaw Mountains-Eagle Buttes | Montana | Magmatic REE | Carbonatite; Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Big Ben | Montana | Climax-type | Porphyry molybdenum |
| Bitterroot Range anorthosite | Montana | Mafic magmatic | Iron-titanium oxide |
| Castle stock | Montana | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Crazy Mountain Volcanics | Montana | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Grass Range | Montana | Magmatic REE | Carbonatite |
| Highwood Mountains | Montana | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Johnson Ranch-Gold Butte-Froze to Death Butte | Montana | Magmatic REE | Carbonatite |
| Judith Mountains | Montana | Magmatic REE | Carbonatite |
| Little Belt Mountains | Montana | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| MT-ID Alkalic Belt | Montana | Alkalic porphyry | Fluorspar; Polymetallic sulfide S-R-V-IS |
| Missouri Breaks diatremes | Montana | Magmatic REE | Carbonatite |
| Moccasin Mountains | Montana | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Smoky Butte | Montana | Magmatic REE | Carbonatite |
| Snowbird-Dry Creek | Montana | Magmatic REE | Carbonatite; Fluorspar |
| Sweet Grass Hills | Montana | Magmatic REE | Carbonatite; Fluorspar; Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Cretaceous heavy-mineral placer sandstones (black sandstones) | Montana, North Dakota, South Dakota, Wyoming | Placer | Columbite/tantalite; Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; Uraninite, autunite-group minerals; Wolframite/scheelite; Zircon |
| Cretaceous-Paleocene coals, underclays, and interbeds | Montana, North Dakota, South Dakota, Wyoming | Chemical weathering | Clay; Coal uranium; Regolith (Ion adsorption) REE; Surficial uranium |
| Northwestern Black Hills Uranium District | Montana, Wyoming | Meteoric recharge | Sandstone uranium |
| Pryor Mountains-Little Mountain | Montana, Wyoming | Meteoric recharge | Carbonate uranium |
| Crow Butte | Nebraska | Meteoric recharge | Sandstone uranium |
| Elk Creek carbonatite | Nebraska | Magmatic REE | Carbonatite |
| Cortez Mountains | Nevada | IOA-IOCG | Iron oxide apatite |
| Humboldt Mafic Complex | Nevada | IOA-IOCG | Iron oxide apatite; Iron oxide copper gold; Polymetallic sulfide S-R-V |
| Jackson Mountains | Nevada | IOA-IOCG | Iron oxide apatite |
| Mount Hope | Nevada | Climax-type | Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Mount Wheeler mine area | Nevada | Climax-type | Greisen; Greisen-S-R beryllium; Polymetallic sulfide S-R-V-IS |
| Oreana mine area | Nevada | Climax-type | Greisen; Greisen-S-R beryllium; Polymetallic sulfide S-R-V-IS |
| Toiyabe Peaks | Nevada | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| McDermitt Caldera | Nevada, Oregon | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Tintic-Deep Creek belt | Nevada, Utah | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; Greisen; High sulfidation gold-silver; Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; R-V manganese; S-R-V tungsten |
| Tintic-Deep Creek belt | Nevada, Utah | Climax-type | Distal disseminated silver-gold; Fluorspar; Greisen; Greisen-S-R beryllium; Lithocap alunite; Lithocap kaolinite; Pegmatite NYF; Polymetallic sulfide S-R-V-IS; Volcanogenic beryllium; Volcanogenic uranium |
| Burro Mountains | New Mexico | Hybrid magmatic REE / basin brine path | Fluorspar |
| Cooks Range-Fluorite Ridge fluorite-manganese | New Mexico | Hybrid magmatic REE / basin brine path | Fluorspar |
| Diamond Tail (Hagan Basin) | New Mexico | Meteoric recharge | Sandstone uranium |
| Gallinas Mountains Mining District | New Mexico | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Grants Uranium District | New Mexico | Meteoric recharge | Sandstone uranium |
| Grants Uranium District-Todilto | New Mexico | Meteoric recharge | Carbonate uranium |
| Hansonburg district | New Mexico | Hybrid magmatic REE / basin brine path | Fluorspar |
| Lemitar Mountains Mining District | New Mexico | Magmatic REE | Carbonatite |
| Mogollon-Wilcox-Gila fluorite districts | New Mexico | Magmatic REE | Fluorspar |
| New Mexico Cambrian alkaline rocks and REE veins | New Mexico | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| New Mexico Proterozoic alkaline rocks and pegmatites | New Mexico | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| New Mexico Tertiary alkaline rocks and REE veins | New Mexico | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| New Mexico carbonatites | New Mexico | Magmatic REE | Carbonatite |
| Pajarito Mountain | New Mexico | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Palm Park (Rincon district) | New Mexico | Hybrid magmatic REE / basin brine path | Fluorspar |
| Petaca placers | New Mexico | Placer | Columbite/tantalite; Monazite/xenotime; Zircon |
| Red Basin-Riley | New Mexico | Meteoric recharge | Sandstone uranium |
| Tortugas Mountains | New Mexico | Hybrid magmatic REE / basin brine path | Fluorspar |
| Victorio Mining District | New Mexico | Climax-type | Polymetallic sulfide S-R-V-IS; Porphyry molybdenum; Skarn molybdenum |
| Wind Mountain (Cornudas Mountains) | New Mexico | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Zuni Mountains fluorspar | New Mexico | Magmatic REE | Fluorspar |
| Texas-New Mexico alkaline belt | New Mexico, Texas | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Texas-New Mexico alkaline belt | New Mexico, Texas | Climax-type | Porphyry molybdenum |
| Port Leyden mine area | New York | IOA-IOCG | Iron oxide apatite |
| Adirondack magnetite-apatite deposits | New York, Vermont | IOA-IOCG | Iron oxide apatite |
| Yadkin-Richland Mining District | North Carolina | Mafic magmatic | Iron-titanium oxide |
| North Carolina fireclays | North Carolina, South Carolina | Chemical weathering | Clay |
| Neoproterozoic granitoids | North Carolina, Virginia | Chemical weathering | Regolith (Ion adsorption) REE |
| Southwest Washington bauxite | Oregon, Washington | Chemical weathering | Bauxite |
| Puerto Rico volcanogenic Mn | Puerto Rico | Volcanogenic seafloor | Manganese oxide (layers, crusts, nodules) |
| Bear Lodge District and Broader Region | South Dakota, Wyoming | Magmatic REE | Carbonatite |
| Edgemont | South Dakota, Wyoming | Meteoric recharge | Sandstone uranium |
| Tertiary Heavy Mineral Sands | Tennessee | Placer | Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
| Big Bend alkaline rocks | Texas | Hybrid magmatic REE / basin brine path | Fluorspar |
| Cave Peak | Texas | Climax-type | Porphyry molybdenum |
| Central Texas pegmatites | Texas | Climax-type | Pegmatite NYF |
| Round Top | Texas | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Texas Cretaceous intrusions | Texas | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Coal Cliffs | Utah | Placer | Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
| Honeycomb Hills | Utah | Climax-type | Fluorspar; Volcanogenic beryllium |
| Iron Axis | Utah | IOA-IOCG | Skarn iron |
| Kaiparowits placer | Utah | Placer | Columbite/tantalite; Ilmenite/rutile/leucoxene; Monazite/xenotime; Uraninite, autunite-group minerals; Wolframite/scheelite; Zircon |
| Lake Bonneville Beach Gravels | Utah | Placer | Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
| Lower Mississippian (Osagean-Meramecian) Phosphate | Utah | Marine chemocline | Phosphate |
| Pine Grove-Blawn Mountain-Broken Ridge-Pink Knolls | Utah | Climax-type | Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Sheeprock or Columbia-East Erickson | Utah | Climax-type | Greisen; Greisen-S-R beryllium; Polymetallic sulfide S-R-V-IS |
| Spor Mountain | Utah | Climax-type | Fluorspar; Volcanogenic beryllium; Volcanogenic uranium |
| Uinta Basin | Utah | Meteoric recharge | Sandstone uranium |
| Virginia bauxite | Virginia | Chemical weathering | Bauxite |
| Virginia nelsonites | Virginia | Mafic magmatic | Iron-titanium oxide |
| Midnite | Washington | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| O'Toole Mountain | Washington | Climax-type | Porphyry molybdenum; Skarn molybdenum |
| Olympic Peninsula deposits | Washington | Volcanogenic seafloor | Manganese oxide (layers, crusts, nodules) |
| Sherwood | Washington | Meteoric recharge | Sandstone uranium |
| Spokane Mountain | Washington | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Washington Heavy Mineral Placers | Washington | Placer | Columbite/tantalite; Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; PGE; Zircon |
| Washington bauxite district | Washington | Chemical weathering | Bauxite |
| Middle Devonian REE phosphates | West Virginia | Marine chemocline | Phosphate |
| Wausau Syenite Complex (WSC) | Wisconsin | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Wolf River Batholith | Wisconsin | IOA-IOCG | Iron oxide apatite; Iron oxide copper gold |
| Wolf River Batholith | Wisconsin | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Bald Mountain paleoplacers | Wyoming | Placer | Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
| Bates Hole area fluvial paleoplacers | Wyoming | Placer | Monazite/xenotime; Uraninite, autunite-group minerals |
| Central Laramie Range | Wyoming | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Central Laramie Range | Wyoming | Mafic magmatic | Chromite; Iron-titanium oxide; Nickel-copper-PGE sulfide |
| Central Laramie Range | Wyoming | Volcanogenic seafloor | Barite; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide |
| Copper Mountain | Wyoming | Meteoric recharge | Sandstone uranium |
| Gas Hills | Wyoming | Meteoric recharge | Sandstone uranium |
| Great Divide Basin | Wyoming | Meteoric recharge | Sandstone uranium |
| Ketchum Buttes | Wyoming | Meteoric recharge | Sandstone uranium |
| Poison Basin | Wyoming | Meteoric recharge | Sandstone uranium |
| Powder River Basin | Wyoming | Meteoric recharge | Sandstone uranium |
| Rattlesnake Hills Alkali Intrusive Complex | Wyoming | Magmatic REE | Carbonatite |
| Shirley Basin | Wyoming | Meteoric recharge | Sandstone uranium |
| Sweetwater Arch | Wyoming | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Sweetwater Arch | Wyoming | Volcanogenic seafloor | Algoma iron; Manganese-oxide (layers, crusts, nodules); Polymetallic sulfide |
| Wyoming Metasedimentary and Metavolcanic Belts | Wyoming | Mafic magmatic | Chromite; Iron-titanium oxide; Nickel-copper-PGE sulfide |
| Wyoming Metasedimentary and Metavolcanic Belts | Wyoming | Metamorphic | Gneiss REE (monazite, xenotime); Gneiss U; Graphite (coal or carbonaceous sed) |
| Wyoming Metasedimentary and Metavolcanic Belts | Wyoming | Volcanogenic seafloor | Barite; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide |
Where USGS is looking next: graphite focus areas
Separate from known deposits, the USGS Earth Mapping Resources Initiative designates focus areas where new geologic mapping and geophysics are being acquired because the mineral systems are favorable. These are areas of interest, not discoveries.
| Focus area | State(s) | Mineral system | Deposit type(s) |
|---|---|---|---|
| Alabama Graphite-Vanadium Belt | Alabama | Metamorphic | Graphite (coal or carbonaceous sed) |
| Chugach Range Graphite | Alaska | Metamorphic | Graphite (coal or carbonaceous sed) |
| Seward Peninsula Graphite | Alaska | Metamorphic | Graphite (coal or carbonaceous sed) |
| Yukon-Tanana Upland Graphite | Alaska | Metamorphic | Graphite (coal or carbonaceous sed) |
| Central and southern California graphite | California | Metamorphic | Graphite (coal or carbonaceous sed) |
| California Coast Ranges graphite | California, Oregon | Metamorphic | Graphite (coal or carbonaceous sed) |
| Rocky Mountain graphite | Colorado, South Dakota | Metamorphic | Graphite (coal or carbonaceous sed) |
| Brimfield Schist graphite | Connecticut, Massachusetts | Metamorphic | Graphite (coal or carbonaceous sed) |
| Eastern Blue Ridge graphite deposits | Georgia, North Carolina, Virginia | Metamorphic | Graphite (coal or carbonaceous sed) |
| Non-Midcontinent Rift mafic/ultramafic intrusions | Iowa, Michigan, Minnesota | Mafic magmatic | Iron-titanium oxide; Nickel-copper-PGE sulfide |
| Madrid Formation graphite | Maine | Metamorphic | Graphite (coal or carbonaceous sed) |
| Cockeysville Marble | Maryland | Metamorphic | Graphite (coal or carbonaceous sed) |
| Graphitic Gneiss | Maryland | Metamorphic | Graphite (coal or carbonaceous sed) |
| Graphite in black shales | Michigan, Minnesota, Wisconsin | Metamorphic | Graphite (coal or carbonaceous sed) |
| Midcontinent Rift mafic-ultramafic satellite intrusions | Michigan, Wisconsin | Mafic magmatic | Iron-titanium oxide; Nickel-copper-PGE sulfide |
| Midcontinent Rift oxide-ultramafic intrusions (OUIs) | Minnesota | Mafic magmatic | Iron-titanium oxide; Nickel-copper-PGE sulfide |
| Southwest Montana graphite | Montana | Metamorphic | Graphite (coal or carbonaceous sed) |
| Nevada graphite: Chedic | Nevada | Metamorphic | Graphite (coal or carbonaceous sed) |
| Nevada graphite: Grumpy Lizard | Nevada | Metamorphic | Graphite (coal or carbonaceous sed) |
| New Mexico graphite | New Mexico | Metamorphic | Graphite (coal or carbonaceous sed) |
| Glens Falls Graphite Areas | New York, Vermont | Metamorphic | Graphite (coal or carbonaceous sed) |
| Chester-Allentown graphite district | Pennsylvania | Metamorphic | Graphite (coal or carbonaceous sed) |
| Central Texas graphite | Texas | Metamorphic | Graphite (coal or carbonaceous sed) |
| Northern Washington graphite | Washington | Metamorphic | Graphite (coal or carbonaceous sed) |
| Sunset | Washington | Metamorphic | Gneiss U; Graphite (coal or carbonaceous sed) |
| Central Laramie Range | Wyoming | Metamorphic | Graphite (coal or carbonaceous sed) |
| Sweetwater Arch | Wyoming | Metamorphic | Graphite (coal or carbonaceous sed) |
| Wyoming Metasedimentary and Metavolcanic Belts | Wyoming | Metamorphic | Gneiss REE (monazite, xenotime); Gneiss U; Graphite (coal or carbonaceous sed) |
Where USGS is looking next: gallium focus areas
Separate from known deposits, the USGS Earth Mapping Resources Initiative designates focus areas where new geologic mapping and geophysics are being acquired because the mineral systems are favorable. These are areas of interest, not discoveries.
| Focus area | State(s) | Mineral system | Deposit type(s) |
|---|---|---|---|
| Alabama bauxite | Alabama | Chemical weathering | Bauxite |
| Cragford Mining District | Alabama | Porphyry Cu-Mo-Au | High sulfidation gold-silver; Lithocap alunite |
| Goldville-Hog Mountain District | Alabama | Porphyry Cu-Mo-Au | High sulfidation gold-silver; Lithocap alunite |
| Valley and Ridge barite (Brannon Springs area-Etowah and St. Clair Counties) | Alabama | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Valley and Ridge barite (Pleasant Valley area-Calhoun County) | Alabama | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Valley and Ridge barite (Sinks area-Bibb County) | Alabama | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Pennsylvanian Phosphate, Black Shale, Underclay | Alabama, Arkansas, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Michigan, Missouri, Nebraska, New York, Ohio, Oklahoma, Pennsylvania, Tennessee, Texas, Virginia, West Virginia | Chemical weathering | Clay |
| Pennsylvanian Phosphate, Black Shale, Underclay | Alabama, Arkansas, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Michigan, Missouri, Nebraska, New York, Ohio, Oklahoma, Pennsylvania, Texas, Virginia, West Virginia | Basin brine path | Zinc-lead (MVT and sedex) |
| Blue Ridge VMS deposits | Alabama, Georgia, North Carolina, South Carolina, Virginia | Volcanogenic seafloor | Polymetallic sulfide |
| Big Delta-Circle-Livengood | Alaska | Basin brine path | Zinc-lead (MVT and sedex) |
| Black River-Charley River-Eagle | Alaska | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Brooks Range-Central Belt Sed Cu | Alaska | Basin brine path | Copper (sed-hosted and replacement) |
| Brooks Range-Northeastern Sed Cu | Alaska | Basin brine path | Copper (sed-hosted and replacement) |
| Brooks Range-Northern Foreland Sed Cu | Alaska | Basin brine path | Barite (replacement and bedded); Copper (sed-hosted and replacement) |
| Central Alaska Range | Alaska | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Central Seward Peninsula | Alaska | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Coast Mountain Belt | Alaska | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide |
| Eastern Alaska Range | Alaska | Volcanogenic seafloor | Barite; Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Eastern Interior | Alaska | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Farewell Terrane | Alaska | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Johnson River | Alaska | Volcanogenic seafloor | Polymetallic sulfide |
| Johnson River | Alaska | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Kasaan Peninsula (Prince of Wales Island) | Alaska | IOA-IOCG | Iron oxide copper gold; Polymetallic sulfide S-R-V |
| Kougruk Fault zone | Alaska | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Nome Complex Sed Cu | Alaska | Basin brine path | Copper (sed-hosted and replacement) |
| Nome belt | Alaska | Volcanogenic seafloor | Barite; Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Northern Brooks Range | Alaska | Volcanogenic seafloor | Barite; Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Prince William Sound | Alaska | Volcanogenic seafloor | Barite; Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Seward Peninsula | Alaska | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Seward Peninsula IOCG | Alaska | IOA-IOCG | Iron oxide copper gold; Polymetallic sulfide S-R-V |
| Southeast Alaska VMS | Alaska | Volcanogenic seafloor | Barite; Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Southern Brooks Range-Ambler | Alaska | Volcanogenic seafloor | Barite; Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Southern Talkeetna Mountains | Alaska | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Talkeetna Mountains-Eastern Alaska Range Sed Cu | Alaska | Basin brine path | Copper (sed-hosted and replacement) |
| Western Alaska Range | Alaska | Volcanogenic seafloor | Copper-zinc sulfide; Zinc-copper sulfide |
| Western and central Brooks Range (Brooks Range zinc belt) | Alaska | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Wrangell Mountains-Kennecott Sed Cu | Alaska | Basin brine path | Copper (sed-hosted and replacement) |
| Castle Dome fluorite | Arizona | Climax-type | Fluorspar; Polymetallic sulfide S-R-V-IS |
| Red Mountain, Arizona | Arizona | Porphyry Cu-Mo-Au | Lithocap alunite; Polymetallic sulfide S-R-V-IS |
| Resolution | Arizona | Porphyry Cu-Mo-Au | Lithocap alunite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper |
| Southern Basin and Range VMS | Arizona | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Colorado Plateau sediment-hosted copper | Arizona, Colorado, New Mexico, Utah | Basin brine path | Copper (sed-hosted and replacement) |
| Saddleback Mountain-Goat Camp (and Steeple Rock district) | Arizona, New Mexico | Porphyry Cu-Mo-Au | Lithocap alunite |
| Saddleback Mountain-Goat Camp (and Steeple Rock district) | Arizona, New Mexico | Climax-type | Fluorspar; High sulfidation; Lithocap alunite; Polymetallic sulfide S-R-V-IS |
| Southwest Laramide Porphyry Belt | Arizona, New Mexico | Porphyry Cu-Mo-Au | Greisen; Lithocap alunite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; Porphyry/skarn molybdenum |
| Arkansas Bauxite Region | Arkansas | Chemical weathering | Bauxite |
| Granite Mountain syenite | Arkansas | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites |
| Northern Arkansas MVT Mineral District | Arkansas | Basin brine path | Zinc-lead (MVT and sedex) |
| Southwest Arkansas Antimony District | Arkansas | Coeur d'Alene-type | Antimony; Polymetallic sulfide |
| Gorman tin district | California | Porphyry Sn (granite-related) | Polymetallic sulfide S-R-V-IS |
| North central California massive sulfide | California | Volcanogenic seafloor | Barite; Copper-zinc sulfide |
| Shoshone Mining District, California | California | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Sierra Nevada foothills massive sulfide | California | Volcanogenic seafloor | Copper-zinc sulfide; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide; Zinc-copper sulfide |
| Eastern California tungsten | California, Nevada | Porphyry Cu-Mo-Au | S-R-V tungsten; Polymetallic sulfide S-R-V-IS |
| Western Great Basin Porphyry Copper | California, Nevada | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; High sulfidation gold-silver; Lithocap alunite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; Porphyry/skarn molybdenum; Skarn iron |
| Great Basin West VMS | California, Nevada, Oregon | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Oregon Cyprus-type massive sulfide | California, Oregon | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| California Coast Ranges massive sulfide | California, Oregon, Washington | Volcanogenic seafloor | Copper-zinc sulfide; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide; Zinc-copper sulfide |
| Central City-Idaho Springs polymetallic veins | Colorado | Alkalic porphyry | Polymetallic sulfide S-R-V-IS |
| Central Colorado Mineral Belt carbonate-replacement deposits | Colorado | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Central Rocky Mountains VMS | Colorado | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Climax-Sweet Home | Colorado | Climax-type | Greisen; Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Hahns Peak | Colorado | Climax-type | Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Henderson-Urad | Colorado | Climax-type | Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Jamestown district | Colorado | Alkalic porphyry | Fluorspar; Low sulfidation; Polymetallic sulfide S-R-V-IS |
| La Plata polymetallic district | Colorado | Alkalic porphyry | Distal disseminated silver-gold; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper-gold |
| Montezuma-Breckenridge polymetallic districts | Colorado | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Mt. Emmons-Redwell Basin | Colorado | Climax-type | Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Red Mountain, Colorado | Colorado | Climax-type | Distal disseminated silver-gold; Lithocap alunite |
| Rosita Hills | Colorado | Climax-type | Lithocap alunite; Polymetallic sulfide S-R-V-IS |
| Silver Creek-Calico Peak | Colorado | Climax-type | Lithocap alunite; Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Silverton | Colorado | Climax-type | Polymetallic sulfide S-R-V-IS |
| St Peters dome district (Oligocene) | Colorado | Alkalic porphyry | Low sulfidation; Polymetallic sulfide S-R-V-IS |
| Summitville | Colorado | Climax-type | Lithocap alunite; Polymetallic sulfide S-R-V-IS |
| Central Colorado sediment-hosted Cu | Colorado, New Mexico | Basin brine path | Copper (sed-hosted and replacement) |
| New Mexico-Texas-Colorado sediment-hosted Cu | Colorado, New Mexico, Oklahoma, Texas | Basin brine path | Copper (sed-hosted and replacement) |
| Sangre de Cristo VMS | Colorado, New Mexico, Texas | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Medicine Bow Mountains | Colorado, Wyoming | Volcanogenic seafloor | Barite; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide |
| Medicine Bow Mountains | Colorado, Wyoming | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| New England Peri-Laurentian Arc Systems | Connecticut, Maine, Massachusetts, Vermont | Volcanogenic seafloor | Copper-zinc sulfide |
| Hartford-Deerfield Mesozoic Basin | Connecticut, Massachusetts | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Georgia bauxite | Georgia | Chemical weathering | Bauxite |
| Barite Hill mining district | Georgia, South Carolina | Volcanogenic seafloor | Barite; Polymetallic sulfide |
| South Carolina/Georgia kaolin deposits | Georgia, South Carolina | Chemical weathering | Clay |
| Ducktown District | Georgia, Tennessee | Volcanogenic seafloor | Copper-zinc sulfide |
| Hawaii bauxite | Hawaii | Chemical weathering | Bauxite |
| Central Idaho barite | Idaho | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Central Idaho bismuth-bearing veins | Idaho | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Challis fluorspar | Idaho | Alkalic porphyry | Fluorspar; Polymetallic sulfide S-R-V-IS |
| Clark Fork | Idaho | Coeur d'Alene-type | Polymetallic sulfide |
| Cuddy Mountain barite | Idaho | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Idaho Cobalt Belt | Idaho | IOA-IOCG | Iron oxide copper gold; Polymetallic sulfide S-R-V |
| Indian Creek Mining District | Idaho | IOA-IOCG | Iron oxide copper gold; Polymetallic sulfide S-R-V |
| Lakeview mining district | Idaho | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Lava Creek mining district | Idaho | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten |
| South Mountain district | Idaho | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Triumph sedex mineral system | Idaho | Basin brine path | Zinc-lead (MVT and sedex) |
| White Cloud mineral district | Idaho | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; Porphyry/skarn molybdenum; S-R-V tungsten |
| Belt Basin | Idaho, Montana | Basin brine path | Copper (sed-hosted and replacement); Zinc-lead (MVT and sedex) |
| Coeur d'Alene Mining District (Silver Valley antimony) | Idaho, Montana | Coeur d'Alene-type | Antimony; Polymetallic sulfide |
| Junction District Pb-Zn | Idaho, Montana | Basin brine path | Reflux and hydrothermal dolomite; Zinc-lead (MVT and sedex) |
| Spar Lake (Troy) | Idaho, Montana | Basin brine path | Copper (sed-hosted and replacement) |
| NW polymetallic Au-Ag veins | Idaho, Montana, Oregon | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Sullivan-type zinc | Idaho, Montana, Washington | Basin brine path | Zinc-lead (MVT and sedex) |
| Northeast Oregon -Idaho massive sulfide | Idaho, Oregon, Washington | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Nugget Sandstone Copper | Idaho, Utah, Wyoming | Basin brine path | Copper (sed-hosted and replacement) |
| Washington-Idaho clay | Idaho, Washington | Chemical weathering | Clay |
| Upper Mississippi Valley mineral district | Illinois, Iowa, Wisconsin | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Illinois-Kentucky Fluorspar District | Illinois, Kentucky | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Tri-State District | Kansas, Missouri, Oklahoma | Basin brine path | Zinc-lead (MVT and sedex) |
| Central Kentucky Mineral District | Kentucky | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| South Central Kentucky and North Central Tennessee Mineral District | Kentucky, Tennessee | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Barrett-Big Hill mining area | Maine | Volcanogenic seafloor | Polymetallic sulfide |
| Callahan mine area | Maine | Volcanogenic seafloor | Polymetallic sulfide |
| Drew Hill antimony prospect | Maine | Porphyry Sn (granite-related) | Polymetallic sulfide S-R-V-IS |
| Gouldsboro antimony prospect | Maine | Porphyry Sn (granite-related) | Polymetallic sulfide S-R-V-IS |
| New England Peri-Gondwanan Arc Systems | Maine, New Hampshire | Volcanogenic seafloor | Polymetallic sulfide |
| Catoctin Formation metavolcanics in Maryland | Maryland | Volcanogenic seafloor | Barite; Copper-zinc sulfide; Polymetallic sulfide |
| Westminster Terrane | Maryland | Volcanogenic seafloor | Copper-zinc sulfide |
| Massachusetts Hawley mineral belt | Massachusetts | Volcanogenic seafloor | Manganese oxide (layers, crusts, nodules); Polymetallic sulfide |
| Connecticut Valley-Gaspe trough volcanics | Massachusetts, New Hampshire, Vermont | Volcanogenic seafloor | Copper-zinc sulfide |
| Taconic allochthons | Massachusetts, New York, Vermont | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Pembine-Wausau and Minnesota Paleoproterozoic | Michigan, Minnesota, Wisconsin | Volcanogenic seafloor | Barite; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide; Zinc-copper sulfide |
| Neoarchean Greenstone Belts of Minnesota, North Dakota and South Dakota | Minnesota, North Dakota, South Dakota | Volcanogenic seafloor | Algoma iron; Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Annapolis Subdistrict | Missouri | Basin brine path | Zinc-lead (MVT and sedex) |
| Central Missouri Barite-Lead District | Missouri | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Indian Creek Subdistrict | Missouri | Basin brine path | Zinc-lead (MVT and sedex) |
| Mine La Motte-Fredericktown Subdistrict | Missouri | Basin brine path | Zinc-lead (MVT and sedex) |
| Missouri Cheltenham Fireclay District | Missouri | Chemical weathering | Clay |
| Old Lead Belt Subdistrict | Missouri | Basin brine path | Zinc-lead (MVT and sedex) |
| Viburnum Trend | Missouri | Basin brine path | Zinc-lead (MVT and sedex) |
| Washington County Barite District | Missouri | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Bearpaw Mountains-Eagle Buttes | Montana | Alkalic porphyry | Polymetallic sulfide S-R-V-IS |
| Birch Creek | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten |
| Black Butte (Sheep Creek) | Montana | Basin brine path | Copper (sed-hosted and replacement) |
| Boulder Batholith | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper |
| Bull Mountain-Elkhorn | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Castle stock | Montana | Alkalic porphyry | Polymetallic sulfide S-R-V-IS |
| Hog Heaven Volcanic Field | Montana | Porphyry Cu-Mo-Au | High sulfidation gold-silver |
| Judith Mountains | Montana | Alkalic porphyry | Low sulfidation; Polymetallic sulfide S-R-V-IS |
| Little Belt Mountains | Montana | Alkalic porphyry | Polymetallic sulfide S-R-V-IS |
| MT-ID Alkalic Belt | Montana | Alkalic porphyry | Fluorspar; Polymetallic sulfide S-R-V-IS |
| Marysville district | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; Porphyry/skarn molybdenum |
| Missoula barite (Elk Creek-Coloma District) | Montana | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Moccasin Mountains | Montana | Alkalic porphyry | Polymetallic sulfide S-R-V-IS |
| Mount Evans Summit | Montana | Basin brine path | Zinc-lead (MVT and sedex) |
| Rock Creek/Montanore (Libby) | Montana | Basin brine path | Copper (sed-hosted and replacement) |
| Silver Bow manganese | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Soap Gulch | Montana | Basin brine path | Zinc-lead (MVT and sedex) |
| Tobacco Root batholith | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Cretaceous-Paleocene coals, underclays, and interbeds | Montana, North Dakota, South Dakota, Wyoming | Chemical weathering | Clay; Coal uranium; Regolith (Ion adsorption) REE; Surficial uranium |
| Absaroka Volcanic Plateau | Montana, Wyoming | Porphyry Cu-Mo-Au | Porphyry/skarn copper; Porphyry/skarn molybdenum; Polymetallic sulfide S-R-V-IS |
| Wickiup Creek | Montana, Wyoming | Basin brine path | Zinc-lead (MVT and sedex) |
| Central-Eastern Nevada Porphyry-Skarn-CRD | Nevada | Porphyry Cu-Mo-Au | Intermediate sulfidation antimony; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; Porphyry/skarn molybdenum |
| Goldfield District | Nevada | Porphyry Cu-Mo-Au | High sulfidation gold-silver; Lithocap alunite |
| Goodsprings mining district | Nevada | Basin brine path | Zinc-lead (MVT and sedex) |
| Goodsprings mining district | Nevada | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper |
| Great Basin Central Nevada VMS | Nevada | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Great Basin North Central Nevada Sedex | Nevada | Basin brine path | Zinc-lead (MVT and sedex) |
| Humboldt Mafic Complex | Nevada | IOA-IOCG | Iron oxide apatite; Iron oxide copper gold; Polymetallic sulfide S-R-V |
| Lone Mountain district | Nevada | Basin brine path | Zinc-lead (MVT and sedex) |
| Mount Hope | Nevada | Climax-type | Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Mount Wheeler mine area | Nevada | Climax-type | Greisen; Greisen-S-R beryllium; Polymetallic sulfide S-R-V-IS |
| Oreana mine area | Nevada | Climax-type | Greisen; Greisen-S-R beryllium; Polymetallic sulfide S-R-V-IS |
| Paradise Peak | Nevada | Porphyry Cu-Mo-Au | High sulfidation gold-silver; Lithocap alunite |
| Scraper Springs | Nevada | Climax-type | Distal disseminated silver-gold; Lithocap alunite; Polymetallic sulfide S-R-V-IS |
| Trinity Range-Kamma Mountains | Nevada | Porphyry Sn (granite-related) | Polymetallic sulfide S-R-V-IS; Porphyry/skarn |
| McDermitt Caldera | Nevada, Oregon | Climax-type | Lithocap alunite; Volcanogenic uranium |
| McDermitt Caldera | Nevada, Oregon | Meteoric convection | Low sulfidation epithermal mercury |
| Marysvale-Pioche belt | Nevada, Utah | Climax-type | Distal disseminated silver-gold; Fluorspar; High sulfidation; Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Volcanogenic uranium |
| Marysvale-Pioche belt | Nevada, Utah | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; High sulfidation gold-silver; Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; Porphyry/skarn molybdenum; R-V manganese; S-R-V tungsten |
| Tintic-Deep Creek belt | Nevada, Utah | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; Greisen; High sulfidation gold-silver; Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; R-V manganese; S-R-V tungsten |
| Tintic-Deep Creek belt | Nevada, Utah | Climax-type | Distal disseminated silver-gold; Fluorspar; Greisen; Greisen-S-R beryllium; Lithocap alunite; Lithocap kaolinite; Pegmatite NYF; Polymetallic sulfide S-R-V-IS; Volcanogenic beryllium; Volcanogenic uranium |
| Cheshire County-Westmoreland district | New Hampshire | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Franklin-Sterling Hill Mining District | New Jersey | Basin brine path | Zinc-lead (MVT and sedex) |
| Alum Mountain | New Mexico | Porphyry Cu-Mo-Au | Lithocap alunite; Lithocap kaolinite |
| Aragon Hill | New Mexico | Porphyry Cu-Mo-Au | Lithocap alunite |
| Black Range deposits (Lake Valley-Hermosa-Tierra Blanca-Macho-Kingston districts) | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Deming-area mills (Asarco and Peru mills) | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Elizabethtown-Baldy Mining District | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten |
| Nogal-Bonito (Cedar Creek) | New Mexico | Alkalic porphyry | Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper-gold |
| Organ Mountains District | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Ortiz Mountains (Old Placers-New Placers districts) | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten |
| Peloncillo Mountains (San Simon, McGhee Peak, Steins Pass districts) | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten |
| Picuris district (Copper Hill) | New Mexico | Coeur d'Alene-type | Polymetallic sulfide |
| Questa-Log Cabin-Spring Gulch | New Mexico | Climax-type | Lithocap alunite; Porphyry molybdenum |
| Rattlesnake | New Mexico | Porphyry Cu-Mo-Au | Lithocap alunite |
| Southwest New Mexico VMS | New Mexico | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Taylor Creek Mining District | New Mexico | Climax-type | Lithocap alunite; Rhyolite tin |
| Tyrone-Chino-Hillsboro porphyry copper deposits | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper |
| Victorio Mining District | New Mexico | Climax-type | Polymetallic sulfide S-R-V-IS; Porphyry molybdenum; Skarn molybdenum |
| White Oaks Mining District | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten |
| White Oaks Mining District | New Mexico | Alkalic porphyry | Porphyry/skarn copper-gold; S-R-V tungsten |
| Rossie-Balmat-Edwards Mining Districts | New York | Basin brine path | Zinc-lead (MVT and sedex) |
| Shawangunk Mountains Area | New York | Reduced intrusion-related | Polymetallic sulfide S-R-V-IS |
| Kings Creek Mining District | North Carolina, South Carolina | Volcanogenic seafloor | Barite; Polymetallic sulfide |
| North Carolina fireclays | North Carolina, South Carolina | Chemical weathering | Clay |
| Del Rio/Hot Springs Barite Mining Districts | North Carolina, Tennessee | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Southwest Washington bauxite | Oregon, Washington | Chemical weathering | Bauxite |
| Cornwall Mines | Pennsylvania | IOA-IOCG | Polymetallic sulfide S-R-V; Skarn iron |
| Friedensville | Pennsylvania | Basin brine path | Zinc-lead (MVT and sedex) |
| Puerto Rico alunite | Puerto Rico | Porphyry Cu-Mo-Au | Lithocap alunite |
| Bear Lodge District and Broader Region | South Dakota, Wyoming | Alkalic porphyry | Low sulfidation; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper-gold |
| Copper Ridge Zinc District | Tennessee | Basin brine path | Zinc-lead (MVT and sedex) |
| Fall Branch-Greeneville District | Tennessee | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Mascot-Jefferson City Zinc District | Tennessee | Basin brine path | Zinc-lead (MVT and sedex) |
| Powell River Zinc District | Tennessee | Basin brine path | Zinc-lead (MVT and sedex) |
| Sweetwater Barite District | Tennessee | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Eagle Mountains fluorite | Texas | Climax-type | Fluorspar; Polymetallic sulfide S-R-V-IS |
| Precambrian Franklin Mountain tin | Texas | Porphyry Sn (granite-related) | Polymetallic sulfide S-R-V-IS |
| Box Elder district | Utah | Coeur d'Alene-type | Antimony; Polymetallic sulfide |
| Central Wasatch Mountains | Utah | Porphyry Cu-Mo-Au | High sulfidation gold-silver; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper |
| Clay Canyon | Utah | Porphyry Cu-Mo-Au | Lithocap kaolinite |
| Fish Springs district | Utah | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Gold Hill Mining District | Utah | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; S-R-V tungsten |
| Marysvale | Utah | Climax-type | Fluorspar; Lithocap alunite; Polymetallic sulfide S-R-V-IS; Porphyry molybdenum; Volcanogenic uranium |
| Park City-Gold Hill belt | Utah | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; Greisen; High sulfidation gold-silver; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; S-R-V tungsten |
| Park City-Gold Hill belt | Utah | Climax-type | Fluorspar; Greisen; Polymetallic sulfide S-R-V-IS |
| Pine Grove-Blawn Mountain-Broken Ridge-Pink Knolls | Utah | Climax-type | Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Sheeprock or Columbia-East Erickson | Utah | Climax-type | Greisen; Greisen-S-R beryllium; Polymetallic sulfide S-R-V-IS |
| Trout Creek district | Utah | Climax-type | Greisen; Pegmatite NYF; Polymetallic sulfide S-R-V-IS |
| Tutsagubet Mining District (Apex mine) | Utah | Basin brine path | Copper (sed-hosted and replacement) |
| Vermont zinc | Vermont | Basin brine path | Zinc-lead (MVT and sedex) |
| CAMP event-Culpeper basin | Virginia | Basin brine path | Copper (sed-hosted and replacement) |
| Chopawamsic Ordovician VMS—Mineral, Valzinco district | Virginia | Volcanogenic seafloor | Polymetallic sulfide |
| Timberville and Austinville-Ivanhoe MVT districts | Virginia | Basin brine path | Zinc-lead (MVT and sedex) |
| Virginia bauxite | Virginia | Chemical weathering | Bauxite |
| Central Washington massive sulfide | Washington | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Chelan Butte | Washington | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten |
| Metaline zinc-lead district | Washington | Basin brine path | Zinc-lead (MVT and sedex) |
| NE Washington Sedex | Washington | Basin brine path | Zinc-lead (MVT and sedex) |
| Northeastern Washington massive sulfide | Washington | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Sultan Basin | Washington | Porphyry Cu-Mo-Au | Porphyry/skarn copper; Porphyry/skarn molybdenum |
| Washington bauxite district | Washington | Chemical weathering | Bauxite |
| Aspen Mountain | Wyoming | Porphyry Cu-Mo-Au | Greisen; High sulfidation gold-silver; Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS |
| Central Laramie Range | Wyoming | Porphyry Cu-Mo-Au | Greisen; Polymetallic sulfide S-R-V-IS |
| Central Laramie Range | Wyoming | Volcanogenic seafloor | Barite; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide |
| Leucite Hills volcanics | Wyoming | Alkalic porphyry | Lithocap alunite |
| Sweetwater Arch | Wyoming | Volcanogenic seafloor | Algoma iron; Manganese-oxide (layers, crusts, nodules); Polymetallic sulfide |
| Wyoming Metasedimentary and Metavolcanic Belts | Wyoming | Porphyry Cu-Mo-Au | Greisen; Polymetallic sulfide S-R-V-IS |
| Wyoming Metasedimentary and Metavolcanic Belts | Wyoming | Volcanogenic seafloor | Barite; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide |
Where USGS is looking next: germanium focus areas
Separate from known deposits, the USGS Earth Mapping Resources Initiative designates focus areas where new geologic mapping and geophysics are being acquired because the mineral systems are favorable. These are areas of interest, not discoveries.
| Focus area | State(s) | Mineral system | Deposit type(s) |
|---|---|---|---|
| Valley and Ridge barite (Brannon Springs area-Etowah and St. Clair Counties) | Alabama | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Valley and Ridge barite (Pleasant Valley area-Calhoun County) | Alabama | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Valley and Ridge barite (Sinks area-Bibb County) | Alabama | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Pennsylvanian Phosphate, Black Shale, Underclay | Alabama, Arkansas, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Michigan, Missouri, Nebraska, New York, Ohio, Oklahoma, Pennsylvania, Texas, Virginia, West Virginia | Basin brine path | Zinc-lead (MVT and sedex) |
| Blue Ridge VMS deposits | Alabama, Georgia, North Carolina, South Carolina, Virginia | Volcanogenic seafloor | Polymetallic sulfide |
| Big Delta-Circle-Livengood | Alaska | Basin brine path | Zinc-lead (MVT and sedex) |
| Black River-Charley River-Eagle | Alaska | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Brooks Range-Central Belt Sed Cu | Alaska | Basin brine path | Copper (sed-hosted and replacement) |
| Brooks Range-Northeastern Sed Cu | Alaska | Basin brine path | Copper (sed-hosted and replacement) |
| Brooks Range-Northern Foreland Sed Cu | Alaska | Basin brine path | Barite (replacement and bedded); Copper (sed-hosted and replacement) |
| Central Alaska Range | Alaska | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Central Seward Peninsula | Alaska | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Coast Mountain Belt | Alaska | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide |
| Eastern Alaska Range | Alaska | Volcanogenic seafloor | Barite; Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Eastern Interior | Alaska | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Farewell Terrane | Alaska | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Johnson River | Alaska | Volcanogenic seafloor | Polymetallic sulfide |
| Johnson River | Alaska | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Kasaan Peninsula (Prince of Wales Island) | Alaska | IOA-IOCG | Iron oxide copper gold; Polymetallic sulfide S-R-V |
| Kougruk Fault zone | Alaska | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Nome Complex Sed Cu | Alaska | Basin brine path | Copper (sed-hosted and replacement) |
| Nome belt | Alaska | Volcanogenic seafloor | Barite; Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Northern Brooks Range | Alaska | Volcanogenic seafloor | Barite; Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Prince William Sound | Alaska | Volcanogenic seafloor | Barite; Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Seward Peninsula | Alaska | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Seward Peninsula IOCG | Alaska | IOA-IOCG | Iron oxide copper gold; Polymetallic sulfide S-R-V |
| Southeast Alaska VMS | Alaska | Volcanogenic seafloor | Barite; Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Southern Brooks Range-Ambler | Alaska | Volcanogenic seafloor | Barite; Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Southern Talkeetna Mountains | Alaska | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Talkeetna Mountains-Eastern Alaska Range Sed Cu | Alaska | Basin brine path | Copper (sed-hosted and replacement) |
| Western Alaska Range | Alaska | Volcanogenic seafloor | Copper-zinc sulfide; Zinc-copper sulfide |
| Western and central Brooks Range (Brooks Range zinc belt) | Alaska | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Wrangell Mountains-Kennecott Sed Cu | Alaska | Basin brine path | Copper (sed-hosted and replacement) |
| Artillery Mountains manganese | Arizona | Volcanogenic seafloor | Manganese oxide (layers, crusts, nodules) |
| Castle Dome fluorite | Arizona | Climax-type | Fluorspar; Polymetallic sulfide S-R-V-IS |
| Red Mountain, Arizona | Arizona | Porphyry Cu-Mo-Au | Lithocap alunite; Polymetallic sulfide S-R-V-IS |
| Resolution | Arizona | Porphyry Cu-Mo-Au | Lithocap alunite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper |
| Southern Basin and Range VMS | Arizona | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Lower Colorado River IOCG | Arizona, California | IOA-IOCG | Iron oxide copper gold; Skarn iron |
| Colorado Plateau sediment-hosted copper | Arizona, Colorado, New Mexico, Utah | Basin brine path | Copper (sed-hosted and replacement) |
| Saddleback Mountain-Goat Camp (and Steeple Rock district) | Arizona, New Mexico | Climax-type | Fluorspar; High sulfidation; Lithocap alunite; Polymetallic sulfide S-R-V-IS |
| Southwest Laramide Porphyry Belt | Arizona, New Mexico | Porphyry Cu-Mo-Au | Greisen; Lithocap alunite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; Porphyry/skarn molybdenum |
| Northern Arkansas MVT Mineral District | Arkansas | Basin brine path | Zinc-lead (MVT and sedex) |
| Southwest Arkansas Antimony District | Arkansas | Coeur d'Alene-type | Antimony; Polymetallic sulfide |
| Gorman tin district | California | Porphyry Sn (granite-related) | Polymetallic sulfide S-R-V-IS |
| North central California massive sulfide | California | Volcanogenic seafloor | Barite; Copper-zinc sulfide |
| Shoshone Mining District, California | California | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Sierra Nevada foothills massive sulfide | California | Volcanogenic seafloor | Copper-zinc sulfide; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide; Zinc-copper sulfide |
| Eastern California tungsten | California, Nevada | Porphyry Cu-Mo-Au | S-R-V tungsten; Polymetallic sulfide S-R-V-IS |
| Western Great Basin Porphyry Copper | California, Nevada | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; High sulfidation gold-silver; Lithocap alunite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; Porphyry/skarn molybdenum; Skarn iron |
| Great Basin West VMS | California, Nevada, Oregon | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Oregon Cyprus-type massive sulfide | California, Oregon | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| California Coast Ranges massive sulfide | California, Oregon, Washington | Volcanogenic seafloor | Copper-zinc sulfide; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide; Zinc-copper sulfide |
| Central City-Idaho Springs polymetallic veins | Colorado | Alkalic porphyry | Polymetallic sulfide S-R-V-IS |
| Central Colorado Mineral Belt carbonate-replacement deposits | Colorado | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Central Rocky Mountains VMS | Colorado | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Climax-Sweet Home | Colorado | Climax-type | Greisen; Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Hahns Peak | Colorado | Climax-type | Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Henderson-Urad | Colorado | Climax-type | Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Jamestown district | Colorado | Alkalic porphyry | Fluorspar; Low sulfidation; Polymetallic sulfide S-R-V-IS |
| La Plata polymetallic district | Colorado | Alkalic porphyry | Distal disseminated silver-gold; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper-gold |
| Montezuma-Breckenridge polymetallic districts | Colorado | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Mt. Emmons-Redwell Basin | Colorado | Climax-type | Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Rosita Hills | Colorado | Climax-type | Lithocap alunite; Polymetallic sulfide S-R-V-IS |
| Silver Creek-Calico Peak | Colorado | Climax-type | Lithocap alunite; Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Silverton | Colorado | Climax-type | Polymetallic sulfide S-R-V-IS |
| St Peters dome district (Oligocene) | Colorado | Alkalic porphyry | Low sulfidation; Polymetallic sulfide S-R-V-IS |
| Summitville | Colorado | Climax-type | Lithocap alunite; Polymetallic sulfide S-R-V-IS |
| Central Colorado sediment-hosted Cu | Colorado, New Mexico | Basin brine path | Copper (sed-hosted and replacement) |
| New Mexico-Texas-Colorado sediment-hosted Cu | Colorado, New Mexico, Oklahoma, Texas | Basin brine path | Copper (sed-hosted and replacement) |
| Sangre de Cristo VMS | Colorado, New Mexico, Texas | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Medicine Bow Mountains | Colorado, Wyoming | Volcanogenic seafloor | Barite; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide |
| Medicine Bow Mountains | Colorado, Wyoming | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Sierra Madre | Colorado, Wyoming | Volcanogenic seafloor | Barite; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide |
| New England Peri-Laurentian Arc Systems | Connecticut, Maine, Massachusetts, Vermont | Volcanogenic seafloor | Copper-zinc sulfide |
| Hartford-Deerfield Mesozoic Basin | Connecticut, Massachusetts | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Barite Hill mining district | Georgia, South Carolina | Volcanogenic seafloor | Barite; Polymetallic sulfide |
| Ducktown District | Georgia, Tennessee | Volcanogenic seafloor | Copper-zinc sulfide |
| Central Idaho barite | Idaho | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Central Idaho bismuth-bearing veins | Idaho | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Challis fluorspar | Idaho | Alkalic porphyry | Fluorspar; Polymetallic sulfide S-R-V-IS |
| Clark Fork | Idaho | Coeur d'Alene-type | Polymetallic sulfide |
| Cuddy Mountain barite | Idaho | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Fall Creek uranium area | Idaho | Chemical weathering | Coal uranium |
| Idaho Cobalt Belt | Idaho | IOA-IOCG | Iron oxide copper gold; Polymetallic sulfide S-R-V |
| Indian Creek Mining District | Idaho | IOA-IOCG | Iron oxide copper gold; Polymetallic sulfide S-R-V |
| Lakeview mining district | Idaho | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Lava Creek mining district | Idaho | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten |
| Payette National Forest manganese | Idaho | Volcanogenic seafloor | Manganese oxide (layers, crusts, nodules) |
| South Mountain district | Idaho | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Triumph sedex mineral system | Idaho | Basin brine path | Zinc-lead (MVT and sedex) |
| White Cloud mineral district | Idaho | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; Porphyry/skarn molybdenum; S-R-V tungsten |
| Belt Basin | Idaho, Montana | Basin brine path | Copper (sed-hosted and replacement); Zinc-lead (MVT and sedex) |
| Coeur d'Alene Mining District (Silver Valley antimony) | Idaho, Montana | Coeur d'Alene-type | Antimony; Polymetallic sulfide |
| Junction District Pb-Zn | Idaho, Montana | Basin brine path | Reflux and hydrothermal dolomite; Zinc-lead (MVT and sedex) |
| Spar Lake (Troy) | Idaho, Montana | Basin brine path | Copper (sed-hosted and replacement) |
| NW polymetallic Au-Ag veins | Idaho, Montana, Oregon | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Sullivan-type zinc | Idaho, Montana, Washington | Basin brine path | Zinc-lead (MVT and sedex) |
| Northeast Oregon -Idaho massive sulfide | Idaho, Oregon, Washington | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Nugget Sandstone Copper | Idaho, Utah, Wyoming | Basin brine path | Copper (sed-hosted and replacement) |
| Upper Mississippi Valley mineral district | Illinois, Iowa, Wisconsin | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Illinois-Kentucky Fluorspar District | Illinois, Kentucky | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Tri-State District | Kansas, Missouri, Oklahoma | Basin brine path | Zinc-lead (MVT and sedex) |
| Central Kentucky Mineral District | Kentucky | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| South Central Kentucky and North Central Tennessee Mineral District | Kentucky, Tennessee | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Barrett-Big Hill mining area | Maine | Volcanogenic seafloor | Polymetallic sulfide |
| Callahan mine area | Maine | Volcanogenic seafloor | Polymetallic sulfide |
| Drew Hill antimony prospect | Maine | Porphyry Sn (granite-related) | Polymetallic sulfide S-R-V-IS |
| Gouldsboro antimony prospect | Maine | Porphyry Sn (granite-related) | Polymetallic sulfide S-R-V-IS |
| New England Peri-Gondwanan Arc Systems | Maine, New Hampshire | Volcanogenic seafloor | Polymetallic sulfide |
| Catoctin Formation metavolcanics in Maryland | Maryland | Volcanogenic seafloor | Barite; Copper-zinc sulfide; Polymetallic sulfide |
| Westminster Terrane | Maryland | Volcanogenic seafloor | Copper-zinc sulfide |
| Massachusetts Hawley mineral belt | Massachusetts | Volcanogenic seafloor | Manganese oxide (layers, crusts, nodules); Polymetallic sulfide |
| Connecticut Valley-Gaspe trough volcanics | Massachusetts, New Hampshire, Vermont | Volcanogenic seafloor | Copper-zinc sulfide |
| Taconic allochthons | Massachusetts, New York, Vermont | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Pembine-Wausau and Minnesota Paleoproterozoic | Michigan, Minnesota, Wisconsin | Volcanogenic seafloor | Barite; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide; Zinc-copper sulfide |
| Neoarchean Greenstone Belts of Minnesota, North Dakota and South Dakota | Minnesota, North Dakota, South Dakota | Volcanogenic seafloor | Algoma iron; Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Annapolis Subdistrict | Missouri | Basin brine path | Zinc-lead (MVT and sedex) |
| Central Missouri Barite-Lead District | Missouri | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Indian Creek Subdistrict | Missouri | Basin brine path | Zinc-lead (MVT and sedex) |
| Mine La Motte-Fredericktown Subdistrict | Missouri | Basin brine path | Zinc-lead (MVT and sedex) |
| Old Lead Belt Subdistrict | Missouri | Basin brine path | Zinc-lead (MVT and sedex) |
| Viburnum Trend | Missouri | Basin brine path | Zinc-lead (MVT and sedex) |
| Washington County Barite District | Missouri | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Bearpaw Mountains-Eagle Buttes | Montana | Alkalic porphyry | Polymetallic sulfide S-R-V-IS |
| Birch Creek | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten |
| Black Butte (Sheep Creek) | Montana | Basin brine path | Copper (sed-hosted and replacement) |
| Boulder Batholith | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper |
| Bull Mountain-Elkhorn | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Castle stock | Montana | Alkalic porphyry | Polymetallic sulfide S-R-V-IS |
| Judith Mountains | Montana | Alkalic porphyry | Low sulfidation; Polymetallic sulfide S-R-V-IS |
| Little Belt Mountains | Montana | Alkalic porphyry | Polymetallic sulfide S-R-V-IS |
| MT-ID Alkalic Belt | Montana | Alkalic porphyry | Fluorspar; Polymetallic sulfide S-R-V-IS |
| Marysville district | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; Porphyry/skarn molybdenum |
| Missoula barite (Elk Creek-Coloma District) | Montana | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Moccasin Mountains | Montana | Alkalic porphyry | Polymetallic sulfide S-R-V-IS |
| Mount Evans Summit | Montana | Basin brine path | Zinc-lead (MVT and sedex) |
| Rock Creek/Montanore (Libby) | Montana | Basin brine path | Copper (sed-hosted and replacement) |
| Silver Bow manganese | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Soap Gulch | Montana | Basin brine path | Zinc-lead (MVT and sedex) |
| Tobacco Root batholith | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Absaroka Volcanic Plateau | Montana, Wyoming | Porphyry Cu-Mo-Au | Porphyry/skarn copper; Porphyry/skarn molybdenum; Polymetallic sulfide S-R-V-IS |
| Wickiup Creek | Montana, Wyoming | Basin brine path | Zinc-lead (MVT and sedex) |
| Central-Eastern Nevada Porphyry-Skarn-CRD | Nevada | Porphyry Cu-Mo-Au | Intermediate sulfidation antimony; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; Porphyry/skarn molybdenum |
| Contact Mining District | Nevada | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper |
| Ely (Robinson District) | Nevada | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper |
| Goodsprings mining district | Nevada | Basin brine path | Zinc-lead (MVT and sedex) |
| Goodsprings mining district | Nevada | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper |
| Great Basin Central Nevada VMS | Nevada | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Great Basin North Central Nevada Sedex | Nevada | Basin brine path | Zinc-lead (MVT and sedex) |
| Humboldt Mafic Complex | Nevada | IOA-IOCG | Iron oxide apatite; Iron oxide copper gold; Polymetallic sulfide S-R-V |
| Lone Mountain district | Nevada | Basin brine path | Zinc-lead (MVT and sedex) |
| Mount Hope | Nevada | Climax-type | Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Mount Wheeler mine area | Nevada | Climax-type | Greisen; Greisen-S-R beryllium; Polymetallic sulfide S-R-V-IS |
| Oreana mine area | Nevada | Climax-type | Greisen; Greisen-S-R beryllium; Polymetallic sulfide S-R-V-IS |
| Scraper Springs | Nevada | Climax-type | Distal disseminated silver-gold; Lithocap alunite; Polymetallic sulfide S-R-V-IS |
| Trinity Range-Kamma Mountains | Nevada | Porphyry Sn (granite-related) | Polymetallic sulfide S-R-V-IS; Porphyry/skarn |
| Marysvale-Pioche belt | Nevada, Utah | Climax-type | Distal disseminated silver-gold; Fluorspar; High sulfidation; Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Volcanogenic uranium |
| Marysvale-Pioche belt | Nevada, Utah | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; High sulfidation gold-silver; Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; Porphyry/skarn molybdenum; R-V manganese; S-R-V tungsten |
| Tintic-Deep Creek belt | Nevada, Utah | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; Greisen; High sulfidation gold-silver; Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; R-V manganese; S-R-V tungsten |
| Tintic-Deep Creek belt | Nevada, Utah | Climax-type | Distal disseminated silver-gold; Fluorspar; Greisen; Greisen-S-R beryllium; Lithocap alunite; Lithocap kaolinite; Pegmatite NYF; Polymetallic sulfide S-R-V-IS; Volcanogenic beryllium; Volcanogenic uranium |
| Cheshire County-Westmoreland district | New Hampshire | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Franklin-Sterling Hill Mining District | New Jersey | Basin brine path | Zinc-lead (MVT and sedex) |
| Black Range deposits (Lake Valley-Hermosa-Tierra Blanca-Macho-Kingston districts) | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Deming-area mills (Asarco and Peru mills) | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Elizabethtown-Baldy Mining District | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten |
| Nogal-Bonito (Cedar Creek) | New Mexico | Alkalic porphyry | Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper-gold |
| Organ Mountains District | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Ortiz Mountains (Old Placers-New Placers districts) | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten |
| Peloncillo Mountains (San Simon, McGhee Peak, Steins Pass districts) | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten |
| Picuris district (Copper Hill) | New Mexico | Coeur d'Alene-type | Polymetallic sulfide |
| Southwest New Mexico VMS | New Mexico | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Tyrone-Chino-Hillsboro porphyry copper deposits | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper |
| Victorio Mining District | New Mexico | Climax-type | Polymetallic sulfide S-R-V-IS; Porphyry molybdenum; Skarn molybdenum |
| White Oaks Mining District | New Mexico | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten |
| White Oaks Mining District | New Mexico | Alkalic porphyry | Porphyry/skarn copper-gold; S-R-V tungsten |
| Rossie-Balmat-Edwards Mining Districts | New York | Basin brine path | Zinc-lead (MVT and sedex) |
| Shawangunk Mountains Area | New York | Reduced intrusion-related | Polymetallic sulfide S-R-V-IS |
| Kings Creek Mining District | North Carolina, South Carolina | Volcanogenic seafloor | Barite; Polymetallic sulfide |
| Del Rio/Hot Springs Barite Mining Districts | North Carolina, Tennessee | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Cornwall Mines | Pennsylvania | IOA-IOCG | Polymetallic sulfide S-R-V; Skarn iron |
| Friedensville | Pennsylvania | Basin brine path | Zinc-lead (MVT and sedex) |
| Puerto Rico volcanogenic Mn | Puerto Rico | Volcanogenic seafloor | Manganese oxide (layers, crusts, nodules) |
| Bear Lodge District and Broader Region | South Dakota, Wyoming | Alkalic porphyry | Low sulfidation; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper-gold |
| Copper Ridge Zinc District | Tennessee | Basin brine path | Zinc-lead (MVT and sedex) |
| Fall Branch-Greeneville District | Tennessee | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Mascot-Jefferson City Zinc District | Tennessee | Basin brine path | Zinc-lead (MVT and sedex) |
| Powell River Zinc District | Tennessee | Basin brine path | Zinc-lead (MVT and sedex) |
| Sweetwater Barite District | Tennessee | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) |
| Eagle Mountains fluorite | Texas | Climax-type | Fluorspar; Polymetallic sulfide S-R-V-IS |
| Precambrian Franklin Mountain tin | Texas | Porphyry Sn (granite-related) | Polymetallic sulfide S-R-V-IS |
| Box Elder district | Utah | Coeur d'Alene-type | Antimony; Polymetallic sulfide |
| Central Wasatch Mountains | Utah | Porphyry Cu-Mo-Au | High sulfidation gold-silver; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper |
| Drum Mountains | Utah | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; R-V manganese |
| Fish Springs district | Utah | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS |
| Gold Hill Mining District | Utah | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; S-R-V tungsten |
| Iron Axis | Utah | IOA-IOCG | Skarn iron |
| Marysvale | Utah | Climax-type | Fluorspar; Lithocap alunite; Polymetallic sulfide S-R-V-IS; Porphyry molybdenum; Volcanogenic uranium |
| Oquirrh Mountains | Utah | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper |
| Park City-Gold Hill belt | Utah | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; Greisen; High sulfidation gold-silver; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; S-R-V tungsten |
| Park City-Gold Hill belt | Utah | Climax-type | Fluorspar; Greisen; Polymetallic sulfide S-R-V-IS |
| Pine Grove-Blawn Mountain-Broken Ridge-Pink Knolls | Utah | Climax-type | Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Porphyry molybdenum |
| Sheeprock or Columbia-East Erickson | Utah | Climax-type | Greisen; Greisen-S-R beryllium; Polymetallic sulfide S-R-V-IS |
| Trout Creek district | Utah | Climax-type | Greisen; Pegmatite NYF; Polymetallic sulfide S-R-V-IS |
| Tutsagubet Mining District (Apex mine) | Utah | Basin brine path | Copper (sed-hosted and replacement) |
| Vermont zinc | Vermont | Basin brine path | Zinc-lead (MVT and sedex) |
| CAMP event-Culpeper basin | Virginia | Basin brine path | Copper (sed-hosted and replacement) |
| Chopawamsic Ordovician VMS—Mineral, Valzinco district | Virginia | Volcanogenic seafloor | Polymetallic sulfide |
| Timberville and Austinville-Ivanhoe MVT districts | Virginia | Basin brine path | Zinc-lead (MVT and sedex) |
| Central Washington massive sulfide | Washington | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Chelan Butte | Washington | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten |
| Metaline zinc-lead district | Washington | Basin brine path | Zinc-lead (MVT and sedex) |
| NE Washington Sedex | Washington | Basin brine path | Zinc-lead (MVT and sedex) |
| Northeastern Washington massive sulfide | Washington | Volcanogenic seafloor | Copper-zinc sulfide; Polymetallic sulfide; Zinc-copper sulfide |
| Olympic Peninsula deposits | Washington | Volcanogenic seafloor | Manganese oxide (layers, crusts, nodules) |
| Oroville-Nighthawk district (Four Metals) | Washington | Porphyry Cu-Mo-Au | Porphyry/skarn copper; S-R-V tungsten; Skarn iron |
| Sultan Basin | Washington | Porphyry Cu-Mo-Au | Porphyry/skarn copper; Porphyry/skarn molybdenum |
| Aspen Mountain | Wyoming | Porphyry Cu-Mo-Au | Greisen; High sulfidation gold-silver; Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS |
| Central Laramie Range | Wyoming | Porphyry Cu-Mo-Au | Greisen; Polymetallic sulfide S-R-V-IS |
| Central Laramie Range | Wyoming | Volcanogenic seafloor | Barite; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide |
| Sweetwater Arch | Wyoming | Volcanogenic seafloor | Algoma iron; Manganese-oxide (layers, crusts, nodules); Polymetallic sulfide |
| Wyoming Metasedimentary and Metavolcanic Belts | Wyoming | Porphyry Cu-Mo-Au | Greisen; Polymetallic sulfide S-R-V-IS |
| Wyoming Metasedimentary and Metavolcanic Belts | Wyoming | Volcanogenic seafloor | Barite; Manganese oxide (layers, crusts, nodules); Polymetallic sulfide |
Where USGS is looking next: lithium focus areas
Separate from known deposits, the USGS Earth Mapping Resources Initiative designates focus areas where new geologic mapping and geophysics are being acquired because the mineral systems are favorable. These are areas of interest, not discoveries.
| Focus area | State(s) | Mineral system | Deposit type(s) |
|---|---|---|---|
| Alabama pegmatite zone | Alabama | Porphyry Sn (granite-related) | Pegmatite LCT |
| Smackover Formation lithium | Alabama, Arkansas, Florida, Louisiana, Mississippi, Texas | Basin brine path | Basin brine |
| Pennsylvanian Phosphate, Black Shale, Underclay | Alabama, Arkansas, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Michigan, Missouri, Nebraska, New York, Ohio, Oklahoma, Pennsylvania, Tennessee, Texas, Virginia, West Virginia | Chemical weathering | Clay |
| Central Brooks Range Sn-W | Alaska | Porphyry Sn (granite-related) | Greisen; Pegmatite LCT; Porphyry/skarn |
| Darby-Hogatza Sn-W | Alaska | Porphyry Sn (granite-related) | Greisen; Pegmatite LCT; Porphyry/skarn |
| Kokrines-Hodzana Sn-W | Alaska | Porphyry Sn (granite-related) | Greisen; Pegmatite LCT; Porphyry/skarn |
| Kuskokwim-White Mountains Sn-W | Alaska | Porphyry Sn (granite-related) | Greisen; Pegmatite LCT; Polymetallic sulfide S-R-V-IS; Porphyry/skarn |
| Lost River-Kougarok Sn-W | Alaska | Porphyry Sn (granite-related) | Greisen; Pegmatite LCT; Porphyry/skarn |
| Northern Alaska Range Sn-W | Alaska | Porphyry Sn (granite-related) | Greisen; Pegmatite LCT; Porphyry/skarn |
| Porcupine River Sn-W | Alaska | Porphyry Sn (granite-related) | Greisen; Pegmatite LCT; Porphyry/skarn |
| Yukon-Tanana Sn-W | Alaska | Porphyry Sn (granite-related) | Greisen; Pegmatite LCT; Porphyry/skarn |
| Date Creek Basin | Arizona | Climax-type | Volcanogenic uranium |
| Hopi Buttes | Arizona | Climax-type | Volcanogenic uranium |
| West central Arizona lithium | Arizona | Lacustrine evaporite | Lithium clay |
| White Picacho | Arizona | Porphyry Sn (granite-related) | Pegmatite LCT |
| Lake Mead/Muddy lithium | Arizona, Nevada | Lacustrine evaporite | Lithium clay; Residual brine |
| Arizona and New Mexico lithium | Arizona, New Mexico | Lacustrine evaporite | Lithium clay; Residual brine |
| Birch Creek | California | Porphyry Sn (granite-related) | Greisen; Pegmatite LCT |
| Cal Blue Mine | California | Porphyry Sn (granite-related) | Pegmatite LCT |
| Peninsular Ranges pegmatites | California | Porphyry Sn (granite-related) | Pegmatite LCT |
| Salton Trough lithium and potash | California | Lacustrine evaporite | Residual brine |
| California lithium and potash | California, Nevada | Lacustrine evaporite | Lithium clay; Residual brine |
| Clayton Valley-Rhyolite Ridge lithium | California, Nevada | Lacustrine evaporite | Lithium clay; Residual brine |
| Nevada lithium | California, Nevada, Oregon | Lacustrine evaporite | Lithium clay; Residual brine |
| Brown Derby | Colorado | Porphyry Sn (granite-related) | Pegmatite LCT |
| Cochetopa | Colorado | Climax-type | Volcanogenic uranium |
| Crystal Mountain pegmatites | Colorado | Climax-type | Greisen; Pegmatite NYF |
| Eight Mile Park district | Colorado | Climax-type | Pegmatite NYF |
| Marshall Pass | Colorado | Climax-type | Volcanogenic uranium |
| Meyers Ranch | Colorado | Porphyry Sn (granite-related) | Pegmatite LCT |
| Paradox Basin brine | Colorado, Utah | Basin brine path | Basin brine |
| Connecticut pegmatites | Connecticut | Porphyry Sn (granite-related) | Pegmatite LCT |
| South Carolina/Georgia kaolin deposits | Georgia, South Carolina | Chemical weathering | Clay |
| Latah County beryllium | Idaho | Reduced intrusion-related | Pegmatite LCT |
| Southeast Oregon lithium | Idaho, Nevada, Oregon | Lacustrine evaporite | Lithium clay; Residual brine |
| NW Idaho-NE Washington beryllium | Idaho, Washington | Porphyry Sn (granite-related) | Pegmatite LCT |
| Washington-Idaho clay | Idaho, Washington | Chemical weathering | Clay |
| Archean gneiss terranes | Iowa, Michigan, Minnesota, Nebraska, South Dakota, Wisconsin | Porphyry Sn (granite-related) | Pegmatite LCT; Porphyry/skarn |
| Brunswick pegmatite field | Maine | Porphyry Sn (granite-related) | Pegmatite LCT |
| Cranberry Islands tuff | Maine | Climax-type | Volcanogenic beryllium |
| Topsham pegmatite district | Maine | Porphyry Sn (granite-related) | Pegmatite LCT |
| Traveler Rhyolite | Maine | Climax-type | Volcanogenic beryllium |
| Oxford County pegmatite field | Maine, New Hampshire | Porphyry Sn (granite-related) | Pegmatite LCT |
| Massachusetts pegmatite | Massachusetts | Porphyry Sn (granite-related) | Pegmatite LCT |
| Southern Complex pegmatites | Michigan | Porphyry Sn (granite-related) | Pegmatite LCT |
| Minnesota Quetico Province | Minnesota, North Dakota | Porphyry Sn (granite-related) | Pegmatite LCT; Porphyry/skarn |
| Neoarchean Greenstone Belts of Minnesota, North Dakota and South Dakota | Minnesota, North Dakota, South Dakota | Porphyry Sn (granite-related) | Pegmatite LCT |
| Missouri Cheltenham Fireclay District | Missouri | Chemical weathering | Clay |
| Williston Basin potash | Montana, North Dakota | Basin brine path | Basin brine |
| Cretaceous-Paleocene coals, underclays, and interbeds | Montana, North Dakota, South Dakota, Wyoming | Chemical weathering | Clay; Coal uranium; Regolith (Ion adsorption) REE; Surficial uranium |
| Bonnie Claire lithium | Nevada | Lacustrine evaporite | Lithium clay; Residual brine |
| Golconda Mining District | Nevada | Lacustrine evaporite | Residual brine |
| Mount Wheeler mine area | Nevada | Climax-type | Greisen; Greisen-S-R beryllium; Polymetallic sulfide S-R-V-IS |
| Oreana mine area | Nevada | Climax-type | Greisen; Greisen-S-R beryllium; Polymetallic sulfide S-R-V-IS |
| Teels Marsh | Nevada | Lacustrine evaporite | Lithium clay; Residual brine |
| Virgin Valley Caldera | Nevada | Climax-type | Volcanogenic uranium |
| White Basin | Nevada | Lacustrine evaporite | Lithium clay; Residual brine |
| McDermitt Caldera | Nevada, Oregon | Lacustrine evaporite | Lithium clay; Residual brine |
| McDermitt Caldera | Nevada, Oregon | Climax-type | Lithocap alunite; Volcanogenic uranium |
| Marysvale-Pioche belt | Nevada, Utah | Climax-type | Distal disseminated silver-gold; Fluorspar; High sulfidation; Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Volcanogenic uranium |
| Marysvale-Pioche belt | Nevada, Utah | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; High sulfidation gold-silver; Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; Porphyry/skarn molybdenum; R-V manganese; S-R-V tungsten |
| Tintic-Deep Creek belt | Nevada, Utah | Porphyry Cu-Mo-Au | Distal disseminated silver-gold; Greisen; High sulfidation gold-silver; Lithocap alunite; Lithocap kaolinite; Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper; R-V manganese; S-R-V tungsten |
| Tintic-Deep Creek belt | Nevada, Utah | Climax-type | Distal disseminated silver-gold; Fluorspar; Greisen; Greisen-S-R beryllium; Lithocap alunite; Lithocap kaolinite; Pegmatite NYF; Polymetallic sulfide S-R-V-IS; Volcanogenic beryllium; Volcanogenic uranium |
| Grafton Pegmatite District | New Hampshire | Porphyry Sn (granite-related) | Pegmatite LCT |
| Keene Pegmatite District | New Hampshire | Porphyry Sn (granite-related) | Pegmatite LCT |
| Parker Mountain pegmatite | New Hampshire | Porphyry Sn (granite-related) | Pegmatite LCT |
| Raymond Pegmatite District | New Hampshire | Porphyry Sn (granite-related) | Pegmatite LCT |
| Apache Warm Springs (Ojo Caliente No. 2 district) | New Mexico | Climax-type | Fluorspar; Volcanogenic beryllium |
| Iron Mountain (Sierra Cuchillo) | New Mexico | Climax-type | Greisen; Greisen-S-R beryllium; Volcanogenic beryllium |
| Rociada | New Mexico | Porphyry Sn (granite-related) | Pegmatite LCT |
| Spruce Pine Area | North Carolina | Porphyry Sn (granite-related) | Pegmatite LCT |
| Kings Mountain pegmatite district | North Carolina, South Carolina | Porphyry Sn (granite-related) | Pegmatite LCT |
| North Carolina fireclays | North Carolina, South Carolina | Chemical weathering | Clay |
| Zirconia Pegmatite Mining District | North Carolina, South Carolina | Porphyry Sn (granite-related) | Pegmatite LCT |
| North Carolina pegmatite zone | North Carolina, Tennessee | Porphyry Sn (granite-related) | Pegmatite LCT |
| Lakeview | Oregon | Climax-type | Volcanogenic uranium |
| Southern Black Hills pegmatites | South Dakota | Porphyry Sn (granite-related) | Pegmatite LCT |
| Bear Lodge District and Broader Region | South Dakota, Wyoming | Porphyry Sn (granite-related) | Pegmatite LCT |
| Bonneville basin playas and salt lakes | Utah | Lacustrine evaporite | Residual brine; Salt |
| Honeycomb Hills | Utah | Climax-type | Fluorspar; Volcanogenic beryllium |
| Marysvale | Utah | Climax-type | Fluorspar; Lithocap alunite; Polymetallic sulfide S-R-V-IS; Porphyry molybdenum; Volcanogenic uranium |
| Spor Mountain | Utah | Climax-type | Fluorspar; Volcanogenic beryllium; Volcanogenic uranium |
| Topaz Mountain | Utah | Climax-type | Volcanogenic beryllium; Volcanogenic uranium |
| Little Friar Mountain pegmatite | Virginia | Porphyry Sn (granite-related) | Pegmatite LCT |
| Virginia pegmatite zone-Amelia County | Virginia | Porphyry Sn (granite-related) | Pegmatite LCT |
| Philips Lake | Washington | Porphyry Sn (granite-related) | Pegmatite LCT |
| Animikie Red Ace Pegmatite | Wisconsin | Porphyry Sn (granite-related) | Pegmatite LCT |
| Copper Mountain | Wyoming | Porphyry Sn (granite-related) | Greisen; High sulfidation; Pegmatite LCT; Porphyry/skarn |
What this page does and does not cover
USMIN publishes one dataset per commodity, and the five releases were built to different scopes. The rare-earth release catalogues occurrences broadly, while the graphite records mirror the features USGS carries in its national deposit database. The gallium and germanium releases contribute four and two sites respectively; the two shared Utah Site_IDs are presented as single pages carrying both commodities. The lithium release contributes 21 sites. Absence from this page is not evidence that nothing is there.