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Mineralpedia Details for Bismuthinite

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Bismuthinite

Bismuthinite

Named for the bismuth in the composition. Bismuthinite is a relatively common mineral with over one thousand localities including in Bolivia, the United States, Romania, Germany, England, Australia, Madagascar, and Norway.  Found generally in hydrothermal vein deposits of a range of temperature, in tourmaline-bearing copper deposits in granite, high temperature gold veins, and in volcanic exhalation deposits. Associated minerals include bismuth, aikinite, arsenopyrite, stannite, galena, pyrite, chalcopyrite, tourmaline, wolframite, cassiterite, and quartz.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/bismuthinite.pdf

Formula
Bi2S3 
Crystal System
Orthorhombic 
Crystal Habit
Prismatic, Massive - Lamellar, Granular 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
gray, silver white, tin white 
Streak
gray 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Sectile 
Hardness
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Bismuthinite from Brosso mine, Calea, Torino, Piedmont, Italy

Bismuthinite
            from Brosso mine, Calea, Torino, Piedmont, Italy

Long prismatic silvery crystals to 4.5cm in brown Siderite matrix.

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Bismuthinite from Fowey Consols mine, St. Austell dist., Cornwall, England

Bismuthinite
            from Fowey Consols mine, St. Austell dist., Cornwall, England

Bismuthinite crystals to about 2-3cm.

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Bismuthinite from Llallagua, Bolivia

Bismuthinite
            from Llallagua, Bolivia

Dark grey metallic crystal blades to 8mm in matrix.

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