Facility

USA Rare Earth Round Top Mountain

USA Rare Earth's heavy rare earth deposit at Round Top Mountain in Sierra Blanca, Texas. A planned mining and processing facility funded under the June 2026 CHIPS definitive agreement; the January 2026 letter of intent describes 40,000 metric tons per day of feedstock extraction and commercial production expected to begin in 2028. Development stage; construction not verified in cited sources.

Facts on this page last re-verified Aug 11, 2026 — the oldest verification date among its current claims. How we verify.

Location: Sierra Blanca, Texas, United States

Mining & feedstock

Mining and processing (planned)

Announced

Mining and on-site processing of rare earth and critical mineral feedstock (development stage; process route not detailed in cited sources)

Material flow

Rare Earth Ore → Mixed Rare Earth Carbonate

Capacity

No capacity claim. Absence of a figure means no source publishes one.

Qualification

No qualification claim. Status does not imply qualified output.

Sources

National Institute of Standards and Technology · published Jan 26, 2026 · retrieved Aug 11, 2026 · archive
National Institute of Standards and Technology · published Jun 3, 2026 · retrieved Aug 11, 2026 · archive