- Cuprite, Copper
- Miniature, 4.7 x 2.2 x 0.8 cm
- Rio Tinto mine (Mountain City Copper mine), Mountain City District, Elko Co., Nevada, USA
A really fine, floater specimen of lustrous, brick-red cuprite coating a very aesthetic, arborescent cluster of spinel-twinned copper crystals from the well-known Rio Tinto Mine of Elk County, Nevada. An excellent, highly crystallized copper from this locale. Ex. Dave Stoudt Collection.