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Formula: SbAs
Alloy of antimony and arsenic,
arsenic group
Crystal System: Trigonal
Specific gravity: 5.8 to 6.2 measured, 6.307 calculated
Hardness: 3 to 4
Streak: Greyish black
Colour: Tin-white tarnishing to grey
Common impurities: Bi,Fe,S
Environments:
Pegmatites
Hydrothermal environments most common
Stibarsen occurs most commonly in hydrothermal veins, but also in pegmatites , associated with
arsenic, arsenolite,
antimony, kermesite,
stibnite, stibiconite,
cervantite, sphalerite,
siderite, calcite and
quartz
(HOM).
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