A Geoscience Digital Image Library

TitleChalcocite with malachite, Butte, Montana
DescriptionThis sample contains mostly fine grained chalcocite, Cu2S (one kind of copper sulfide). Although somewhat rare, chalcocite is an important copper ore mineral that has been mined for centuries. In this specimen, 10 cm across, it is accompanied by a small amount of vivid green malachite, Cu2(CO3)(OH)2 (copper carbonate hydroxide).
LocationUSA ▹ Montana. Near Butte.
PhotographerDarla Sondrol. 2001-07-10.
CollectionUniversity of North Dakota Mineralogy Collection #156.
Key wordschalcocite, malachite, Montana
Tech details625 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number1091