Chalcocite (fine large crystals - rare locality)

Item Description

A good percentage of the specimens that we've seen coming out of the Republic of the Congo (Brazzaville) are secondary copper and lead species, but the old M'Passa Mine, produced some examples of crystallized sulfides (not yet altered into secondary minerals). With that said, few people know that this locality produced some of the largest and most impressive examples of Chalcocite ever seen. Recently (2020-2021) a small amount of material was recovered from this locality, and they are superb examples of this copper sulfide mineral. This particular piece is a very good sized compound group of lustrous, metallic, silvery-grey colored (with a very slight bluish iridescence in areas) pseudohexagonal Chalcocite, free of matrix. The stepped nature of the crystals creates a beautiful effect, with little "stacked" plates all over. The piece is in great condition, with no major damage, and it's nearly a complete "floater", with only one small point of contact on the base. A truly impressive and fine quality example that would make a stellar addition to any sulfide suite, a copper mineral collection or a collection of minerals from Republic of the Congo.