Bismuthinite specimen

Bismuthinite Bismuth Specimen Russia Transbaikalia


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This is the raw lead-gray bismuthinite specimen with feldspar. Dimensions: 3.6 x 2.1 x 1.3″ (9.2 x 5.4 x 3.4cm). Weight — 10.1oz (285 grams). Origin: Russia, Transbaikalia.

Some information about bismuthinite:

Bismuthinite is a mineral consisting of bismuth sulfide (Bi2S3). It is an important ore for bismuth. The crystals are steel-grey to off-white with a metallic luster. It is soft enough to be scratched with a fingernail and rather dense.

It occurs in hydrothermal veins with tourmaline-bearing copper veins associated with granite, in some high temperature gold veins, and in recent volcanic exhalation deposits.

It was first reported in 1832 from the mines of Potosí, Bolivia.