Chalcopyrite
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Chalcopyrite is a sulfide mineral composed of copper and iron, and the most abundant copper ore mineral. It has the chemical formula CuFeS2 and crystallizes in the tetragonal system. It has a brassy t
Chalcopyrite 199453
Microscopic picture of chalcopyrite
Brass-yellow chalcopyrite crystals below large striated pyrite cubes
Copper-zinc ore sample from a VMS deposit at Potter Mine in Timmins, Ontario, Canada. The brassy-yellow mineral is chalcopyrite- the primary ore mineral at this mine.
Sphalerite
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Sphalerite is a sulfide mineral with the chemical formula S. It is the most important ore of zinc. Sphalerite is found in a variety of deposit types, but it is primarily in sedimentary exhalative, Mis
Chalcopyrite
…series with any other sulfide minerals. There is limited substitution of zinc with copper despite chalcopyrite having the same crystal structure as sphalerite. Minor amounts of elements such as silver, gold, cadmium, cobalt, nickel, lead, tin, and zinc can be measured (at parts per million levels), likely…
Black crystals of sphalerite with minor chalcopyrite and calcite
Sphalerite fluorescing under ultraviolet light (Sternberg Museum of Natural History, Kansas, US)
Faceted sphalerite, known by the name of Étoile des Asturies, one of the largest in existence. It actually comes from the Aliva mine, Cantabria (Spain). Cantonal Museum of Geology of Lausanne.
Sphalerite and barite from Cumberland Mine, Tennessee, US