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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. The name is from the Greek stibi through the Latin stibium as the old name for the mineral and the element antimony. As an antimony sulfide, it is potentially toxic and should be handled with care. (source: Wikipedia) Photo by Michael Marcotte (this specimen is at the Museum of Natural History in New York) An example of Stibnite on display at the Field Museum in Chicago. photo by michael Marcotte Return to List Back to Michael's Hobbies page Back to Michael Marcotte's HomePage