Pyrite on Quartz, 3200 level, Stewart Mine, Butte District, Silver Bow County, Montana 2.5 x 3.5 x 4.5 cm $25. Online August 1 SOLD
Well formed cubo-octahedral pyrite on quartz from mining ca. 1970. Excellent locality information almost unheard of in terms of the definitive mine data. Very minor damage to a couple of small quartz crystals. Eric Petersen Collection.