Chalcocite after Covellite, Butte complex, Silver Bow County, Butte, Montana Miniature 1.5 x 2.5 x 3.5 cm $350. Online 2/27
Platy, hexagonal covellite faithfully replaced by deep gray chalcocite. Complete to all sides and in excellent condition. An excellent pseudomorph from a U.S. classic locality. John e. McDonald to; Kenyon to; Dr. Barratt Phillips to; Les Wagner Collection.