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Formula: NiSb
Antimonide,
nickeline group
Crystal System: Hexagonal
Specific gravity: 7.591 to 8.23 measured, 8.629 calculated
Hardness: 5½
Streak: Reddish brown
Colour: Copper-red with a violet tint
Common impurities: Fe,Co,As,S
Environments:
Breithauptite occurs in hydrothermal calcite veins associated
with cobalt-nickel-silver
ores, associated with
silver, nickeline,
maucherite, cobaltite,
ullmannite,
tetrahedrite,
pyrrhotite,
cubanite, chalcopyrite,
sphalerite, galena and
calcite
(Webmin, Dana, HOM, Mindat).
Localities
The type locality is St Andreasberg, Braunlage, Goslar District, Lower Saxony, Germany.
Breithauptite from St Andreasberg -
Image
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