Antimony

silver

stibnite

Formula: Sb
Native element, arsenic group
Forms a series with arsenic
Specific gravity: 6.61 to 6.71
Hardness: 3 to 3½
Streak: Grey
Colour: Tin-white
Environments:

Hydrothermal environments

Antimony occurs in antimony-silver hydrothermal veins with silver, antimony and arsenic minerals (Webmin, Dana, HOM). Associated minerals include silver, stibnite, stibarsen, sphalerite, pyrite, galena and quartz (HOM, Dana, Mindat).

Common impurities: As

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