Critical Minerals Factbook
Deposit

Elk City-Newsome Monazite Placer District

Elk City-Newsome Monazite Placer District is a deposit with published resource estimates in Idaho, 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: Idaho, United States (45.813, -115.528 approx.)

Commodities: rare earth elements (in monazite); gold; garnet; zircon; ilmenite; thorium

Published resource estimates

As compiled by USGS USMIN from the cited studies. Resource classes follow the source; "approximate" flags values USMIN reports as approximations. These are not current company reserve statements.

MaterialClassAmountGradeContainedAs ofReference
garnetUnclassified12,800 t—12,800 metric tons garnetJan 1, 1980Staatz and others (1980), Page 18 — Staatz, M.H., Hall, R.B., Macke, D.L., Armbrustmacher, T.J., and Brownfield, I.K., 1980, Thorium resources of selected regions in the United States: U.S. Geological Survey Circular 824, 32 p.
ilmenite (FeTiO3)Unclassified113,000 t—35,500 metric tons TiJan 1, 1980Staatz and others (1980), Page 18 — Staatz, M.H., Hall, R.B., Macke, D.L., Armbrustmacher, T.J., and Brownfield, I.K., 1980, Thorium resources of selected regions in the United States: U.S. Geological Survey Circular 824, 32 p.
thorium oxide (ThO2)Unclassified5,940 t2.71111 percent141.1 metric tons ThJan 1, 1980Staatz and others (1980), Page 18 — Staatz, M.H., Hall, R.B., Macke, D.L., Armbrustmacher, T.J., and Brownfield, I.K., 1980, Thorium resources of selected regions in the United States: U.S. Geological Survey Circular 824, 32 p.
zircon (ZrSiO4)Unclassified6,520 t—3,240 metric tons ZrJan 1, 1980Staatz and others (1980), Page 18 — Staatz, M.H., Hall, R.B., Macke, D.L., Armbrustmacher, T.J., and Brownfield, I.K., 1980, Thorium resources of selected regions in the United States: U.S. Geological Survey Circular 824, 32 p.

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

Sources