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Formula: AgPbSbS3
Sulphosalt, freieslebenite group
Crystal System: Monoclinic
Specific gravity: 6.20 to 6.23 measured, 6.22 calculated
Hardness: 2½
Streak: Black
Colour: Grey, dark grey
Environments:
Freieslebenite occurs in hydrothermal veins associated with acanthite,
pyrargyrite, silver,
andorite, galena and
siderite
(HOM, Mindat).
Localities
At the Van silver mine, British Columbie, Canada, both freieslebenite and diaphorite,
which are almost indistinguishable,
have been found as crystals up to 1 or 2 mm long
(Minrec 31.3.227).
The type locality is the Himmelsfürst mine, Brand-Erbisdorf, Mittelsachsen, Saxony, Germany.
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