Stibnite, Felsobanya, Roumania


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. Antimony trisulfide finds use in pyrotechnic compositions, namely in the glitter and fountain mixtures. Needle-like crystals, "Chinese Needle", are used in glitter compositions and white pyrotechnic stars. The "Dark Pyro" version is used in flash powders to increase their sensitivity and sharpen their report. It is also a component of modern safety matches. It was formerly used in flash compositions, but its use was abandoned due to toxicity and sensitivity to static electricity.


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Photo credit: © Phil Degginger / Alamy / Afripics
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Keywords: antimonite, antimony, cristobalite-stibnite, crystal, crystals, felsobanya, flame, ilver, lead, lengshuijang, mineral, minerals, retardant, roumania, sb2s3, semiconductor, specimen, specimens, stibnite, sulfide, sulfosalt