Bismuthinite is a mineral consisting of General Name, Symbol, Number Bismuth, Bi, 83 Chemical series Poor metals Group, Period, Block 15 (VA), 6, p Density, Hardness 9.78 g/cm3, 2.25 Appearance lustrous reddish white Atomic properties Atomic weight 208.98038 g/mol Atomic radius (calc.) 160 (143) pm Covalent radius 146 pm van der...
bismuth In chemistry, a sulfide (sulphide in British and Canadian English) is a combination of sulfur with an oxidation number of -2, with another chemical element or a radical thereof. A few covalent sulfur compounds, such as carbon disulfide (CS2) and hydrogen sulfide (H2S) are also considered to be sulfides. It...
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.
External links
mineral galleries (http://www.galleries.com/minerals/sulfides/bismuthi/bismuthi.htm)
web Mineral Site (http://webmineral.com/data/Bismuthinite.shtml)
Bismuthinite is heavier than stibnite and on closer inspection of the crystals, there exists a noticeable difference with bismuthinite's having straighter, flatter faces.
In massive form the confusion is even more pronounced, but bismuthinite is not associated with the typical antimony or arsenic minerals to which stibnite is so commonly allied.
Associations of bismuthinite are varied, but combinations with the rare elemental mineral bismuth are particularly special.
This mine worked two well defined veins up to 200 mm wide, containing bismuthinite and wolframite in a quartz matrix, with topaz and fluorite, in pegamtites near the top of a biotite granite host (Reid, 1919).
Bismuthinite reportedly occurred in long bladed crystals and delicate acicular forms.
Bismuthinite - Occurs as bright silvery crystal aggregates to 4 cm long and as micro needles in small cavities in fluorite, also as inclusions within quartz or fluorite.
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