Formula: Pb7Sb8S19
Sulphosalt, plagionite group
Specific gravity: 5.73
Hardness: 2½ to 3
Streak: Black
Colour: Iron black
Common impurities: Zn
Environments:
Heteromorphite is a rare antimony mineral that occurs in hydrothermal vein deposits
(Webmin, HOM), associated with
sphalerite,
plagionite and semseyite (HOM).
The type locality is the Caspari Mine, Uentrop, Arnsberg, North Rhine-Westphalia, Germany.
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