Argentotennantite-(Zn)

minerals

freibergite

tetrahedrite

stibnite

Formula: Ag6[Cu4Zn2]As4S13
Sulphosalt, tetrahedrite group, forms a series with freibergite
Specific gravity: 5.05 calculated
Hardness: 3½
Streak: Red-brown to black
Colour: Grey black
Common impurities: Pb,Cd
Environments

Metamorphic environments
Hydrothermal environments

Argentotennantite-(Zn) is a very rare mineral. Common associates include ankerite, freibergite, galena, gold, pyrite, quartz, siderite, stibnite, tennantite and tetrahedrite (Mindat).

Localities

At the Mogul Mine, Silvermines District, County Tipperary, Munster, Ireland, argentotennantite occurs in a stratiform lead-zinc orebody associated with geocronite, proustitepyrargyrite and galena (HOM).

At the type locality, the Kvartsitovje Gorki gold deposit, Aksu, Stepnogorsk, Akmola Region, Kazakhstan, argentotennantite occurs in a polymetallic deposit associated with tennantite, tetrahedrite, siderite, stibnite, pyrite, quartz, mercurian gold, galena, ankerite and freibergite (Mindat, HOM). It is often in zoned grains, occurring between tennantite cores and argentotetrahedrite rims (AM 73.439 ).

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