| Category | Sulfide mineral |
|---|---|
| Imasymbol | Bin[1] |
| Formula | Bi2S3 |
| Strunz | 2.DB.05a |
| System | Orthorhombic |
| Class | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
| Symmetry | Pbnm |
| Color | Lead-gray to tin-white, with a yellowish or iridescent tarnish. |
| Habit | Slender prismatic to acicular, massive lamellar |
| Cleavage | [010] Perfect |
| Fracture | Uneven |
| Tenacity | Brittle, sectile |
| Mohs | 2 |
| Luster | Metallic |
| Opticalprop | Opaque |
| Streak | Lead grey |
| Gravity | 6.8–7.2 |
| References | [2][3][4] |
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.
Bismuthinite forms a series with the lead, copper, bismuth mineral aikinite (PbCuBiS3).[4]
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. Associated minerals include native bismuth, aikinite, arsenopyrite, stannite, galena, pyrite, chalcopyrite, tourmaline, wolframite, cassiterite and quartz.[2]
It was first reported in 1832 from the mines of Potosí, Bolivia.[3]
References
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616
- ^ Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C. (2005). "Bismuthinite". Handbook of Mineralogy. Mineral Data Publishing. Retrieved 14 March 2022.
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