Deposit

Aichilik River

Aichilik River is a rare earth occurrence in Alaska, recorded in the USGS USMIN rare earth element occurrence database (ver. 4.0, June 2019).

Facts on this page last re-verified Aug 12, 2026 — the oldest verification date among its current claims. How we verify.

Location: Alaska, United States (69.530, -143.150 approx.)

Commodities: rare earth elements

Deposit model: unclassified

Geology

Efflorescent salt that is mainly aluminum sulfate with high Y and Yb. Efflorescent salts coat outcrops of Kingak Shale and accumulate along the margins of ephemeral pools at the foot of cut banks. (Tourtelot and Tailleur (1971))

Exploration and site history

Inactive — Inactive, 1968 (Tourtelot and Tailleur (1971))

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

Sources

U.S. Geological Survey · published Jun 1, 2019 · retrieved Aug 12, 2026 · archive unavailable: Wayback snapshot 20260427015518 of the ScienceBase item exists but the archive service returned 503 on verification 2026-08-12; recheck on a weekly pass