A Geoscience Digital Image Library

TitleBrochantite from Chuquicamata, Chile
DescriptionBrochantite (the green mineral) is a copper sulfate hydroxide, having general formula Cu4SO4(OH)6. It forms by oxidation of copper ore minerals and is hard to distinguish from some other secondary copper minerals. It typically occurs as acicular (needle-like) or fibrous crystals forming coatings and tufts. The red material is probably cuprite, CuO. These are both important copper ore minerals in some deposits.
LocationChile ▹ Antofagasta. Near Chuquicamata.
PhotographerNessa Eull. 2001-06-06.
CollectionUniversity of North Dakota Mineralogy Collection #822.
Key wordsbrochantite, Chile
Tech details1013 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number636