Mineral Specimen and Product Inventory Search
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Stillwater mine, Nye Co., Montana, United States
- Formula
- Fe2+Cr2O4
- Size
- 17 x 12 x 10 cm - Cabinet
- Tagged
- ore mineral
A large chunk of Chromium ore from the Stillwater mine which is famous for its palladium and platinum minerals.
Though not producing Chromite ore, this large 30 mile complex of layered, mafic igneous rock currently does not produce chromium ore. It is currently mined for its platinum and palladium only. Ore specimens are hard to obtain.
Chromium is widely used in chemicals, metals and refractory materials. Used to harden iron, nonferrous alloys and steel. The addition of 10% chromium also creates corrosion and oxidation resistant alloys such as stainless steel. According to the USGS Minerals Commodity Summary of 2106, about 95% of the world’s chromium resources is geographically concentrated in Kazakhstan and southern Africa; U.S. chromium resources are mostly in the Stillwater Complex in Montana although not currently producing chromium.
