Germanite
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Germanite is a rare copper iron germanium sulfide mineral, Cu13Fe2Ge2S16. It contains Ga,Zn,Mo,As,and V as impurities. It crystallizes in the isometric system. It is a metallic pale greyish-pink, has a hardness of 4 on the Mohs scale, and has a specific gravity of 4.5.
It was first discovered 1922. It is found in Namibia in the Tsumeb Mine, Tsumeb. Other occurrences include: Argentina, Finland, France, Greece, Russia, and Zaire [1] (http://www.mindat.org/min-1681.html).
References
- Mindat.org (http://www.mindat.org/min-1681.html)
- Webmineral (http://webmineral.com/data/Germanite.shtml)