17fbdj.is ((CHALCOCITE pseudomorph after COVELLITE)), $20 MINIMUM BID, Butte, Montana, 3.2 x 2.5 x 1.5 cm, Thumbnail | |
Uncommon Butte copper species pseudomorph. This was purchased from a local Butte mineral dealer and label Chalcocite and mounted in a thumbnail perky box. The boxwork of grey crystals look to me like they were Covellite crystals but now pseudomorphed to Chalcocite |