Chalcocite: Mineral information, data and localities.
This mineral was known by a wide variety of names previously. In 1868, James D. Dana and George J. Brush renamed this material "chalcocite". Dimorph of: Wuyanzhiite. Chalcocite-Yarrowite Series. A secondary mineral in or near the oxidized zone of copper sulfide deposits. Hexagonal above 105°C ('High-chalcocite'). Easily confused with djurleite.
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