Germanite

Germanite is a rare copper iron germanium sulfide mineral, Cu26Fe4Ge4S32. It was first discovered in 1922, and named for its germanium content. It is only a minor source of this important semiconductor element, which is mainly derived from the processing of the zinc sulfide mineral sphalerite. Germanite contains gallium, zinc, molybdenum, arsenic,...
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Germanite

Germanite is a mineral consisting of a complex copper arsenic sulphide containing germanium, gallium, iron, zinc, and lead: an ore of germanium and gallium.
Found on http://www.probertencyclopaedia.com/browse/HG.HTM

germanite

[n] - a rare reddish-gray mineral consisting of a copper iron germanium sulfide
Found on http://www.webdictionary.co.uk/definition.php?query=germanite
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