Frohbergite

minerals

petzite

altaite

melonite

Formula: FeTe2
Telluride, marcasite group, forma a series with mattagamite
Specific gravity: 8.057
Hardness: 3 to 4
Colour: White with bluish or pinkish tint in reflected light
Environments

Hydrothermal environments

Frohbergite occurs in hydrothermal ore deposits, rimming chalcopyrite grains, and as inclusions in gold, petzite or chalcopyrite (Webmin, HOM). Associated minerals include chalcopyrite, altaite, gold, melonite, petzite, montbrayite, sylvanite, tellurobismuthite, pyrite, sphalerite, marcasite, chalcocite and covellite (HOM).

Localities

At the type locality, the Robb-Montbray Mine, Rouyn-Noranda TE, Abitibi-Témiscamingue, Québec, Canada, frohbergite was found associated with altaite, tellurobismuthite, montbrayite, melonite, petzite, chalcopyrite, pyrite, marcasite, sphalerite, chalcocite, covellite and free gold, in polished sections of the rich telluride ore. It appears in fringes surrounding chalcopyrite, and also as inclusions in gold, petzite or chalcopyrite (AM 32.210).

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