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Mines/United States

Stibnite mine

Stibnite mine, United States. Closed, open pit and underground, mining antimony, gold, tungsten.

Why Stibnite is famous

Stibnite in central Idaho was the largest US tungsten mine and the main US antimony source in the Second World War. Claims were staked in 1914 and Bradley Mining took an option in 1927. Donald White of the US Geological Survey found scheelite in drill cores in February 1940. From 1941 to 1945 the mine produced 831,829 WO3 units of tungsten, about 40 per cent of US output, and 10,828 t of antimony, about 90 per cent. Perpetua received a Record of Decision in January 2025 and a conditional Notice to Proceed on 19 September 2025.1,2,3

Story cards

Stibnite today

Where antimony is mined todayWhere gold is mined todayWhere tungsten is mined todayMining in United States

Where next

Mines

ExamplesSangdongSangdong's tungsten was found in 1916. Stibnite's claims were staked in 1914.4ExamplesXikuangshanAntimony: Xikuangshan in Hunan and Stibnite in Idaho, the main US source in the Second World War.1

Sources

  1. Stibnite Historic District, National Register of Historic Places nomination Idaho State Historical Society (National Register nomination)
  2. Form 10-K for 2025 Perpetua Resources Corp. (SEC)
  3. Stibnite (locality) (Q122565131) Wikidata
  4. Annual Information Form for 2025 Almonty Industries (SEC exhibit 99.1 to Form 40-F)

From the Prospector Trails mining history dataset: each fact links to the source it was checked against. Figures are as the source gives them, in the money of their day. Not investment advice.

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Cover photos from Wikimedia Commons: Super Pit, Kalgoorlie by Kgbo, CC BY-SA 4.0; Ore sorting by Tomra Sorting GmbH, CC BY-SA 4.0; Underground mining equipment by Kaupo Kikkas, CC BY-SA 4.0.