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stibnite : ウィキペディア英語版
stibnite

Stibnite, sometimes called antimonite, is a sulfide mineral with the formula Sb2S3. This soft grey material crystallizes in an orthorhombic space group. It is the most important source for the metalloid antimony.〔Sabina C. Grund, K. Hanusch, H. J. Breunig, H. U. Wolf, "Antimony and Antimony Compounds" in Ullmann’s Encyclopedia of Industrial Chemistry 2006, Wiley-VCH, Weinheim. 〕 The name is from the Greek στίβι ''stibi'' through the Latin ''stibium'' as the old name for the mineral and the element antimony.〔〔
==Structure==
Stibnite has a structure similar to that of arsenic trisulfide, As2S3. The Sb(III) centers, which are pyramidal and three-coordinate, are linked via bent two-coordinate sulfide ions. It is grey when fresh, but can turn superficially black due to oxidation in air.

File:Stibnite-150558.jpg|Crystal from Henan Province, China (size: 16.8×5.4×5.4 cm)
File:Stibnite-Calcite-203075.jpg|Needles of stibnite within a transparent crystal of calcite (size: 4.5×3.5×1.8 cm)


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「stibnite」の詳細全文を読む



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