|STIBNITE MINERAL FACTS|
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Stibnite Mineral Facts:
Chemical Formula: Sb2S3 - 71.4 % Antimony by weight
Mineral and streak are
Cleavage: One cleavage that is very perfect parallel (010), leaving striated surfaces.
Luster:. Metallic luster, slightly transparent on very thin sections.
Optics: (Refractive Index): a = 4.303; y = 3.194
Identification and Diagnostics
Localities and Origins:
In Arkansas stibnite is in quartz veins following the bedding planesof shales and sandstones. With it are found many lead, zinc and iron compounds and small quantities of rarer substances. In Utah the mineral occurs in veins unmixed with other minerals, except its own oxidation products. The veins follow the bedding of sandstones and conglomerates. Here, as in Arkansas, the stibnite is believed to have been deposited by magmatic waters.
Antimony is chiefly valuable as an alloy with other metals. With tin and lead it forms type metal. The principal alloys with tin are britannia metal and pewter. With lead, tin and copper it constitutes babbit metal, a hard alloy used in the construction of locomotive and car journals, and with other substances it enters into the composition of other alloys used for a variety of purposes, including bullets and wheel weights.
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Please note that the author, Chris Ralph, retains all copyrights to this entire document and it may not be reproduced, quoted or copied without permission.
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