Ruby Creek

Location: Alaska, United States (64.632, -142.756 approx.)

Commodities: rare earth elements; thorium

Deposit model: alluvial Au-PGE placer · unclassified

Geology

Rocks consist of pre-Middle Ordovician clastic sedimentary rocks, intruded by Mesozoic granite; nearby area pf porphyritic rhyolite may be border phase of the granite or possibly Tertiary rhyolite. (Wedow and others (1954))

Exploration and site history

• Site: Ruby Creek is a 10-mile-long west tributary of Slate Creek. The occurrence is located near the mouth of Ruby Creek, in section 29, T. 3 S., R. 25 E., of the Fairbanks Meridian. The location is accurate within one-half mile. Ruby Creek is locality 41 of Cobb (1972). (Wedow and others (1954))
• History: Monazite and allanite were found in heavy mineral concentrates at the mouth of Ruby Creek in 1949 during a reconnaissance for radioactive deposits. (Wedow and others (1954))
• Discovery — Monazite and allanite were found in heavy-mineral concentrates at the mouth of Ruby Creek in 1949 during a reconnaissance for radioactive deposits, 1949 (Wedow and White (1954))

Record imported from USGS USMIN ver. 4.0 (June 2019). Developments after that date appear on facility records, not here; see the methodology.