Pyrite, 3200 level, Stewart Mine, Butte District, Silver Bow County, Montana 1.5 x 2.5 x 3 cm $15. Online August 1 SOLD
Group of very bright, octahedral pyrite. Well crystallized to all sides. Excellent mine information rarely found on these older specimens. Eric Petersen Collection: Mr. Petersen likely acquired the specimen from an underground worker or miner. Small termination chips on a couple crystals near the edge.