Antimony. CAROLYN A. TYLENDA, BRUCE A. FOWLER, in Handbook on the Toxicology of Metals (Third Edition), 2007 3.2 Production. Antimony is most commonly found in sulfides and sulfo salts such as stibnite, tetrehedrite, bournite, boulangerite, and jamesonite, as well as in some oxides such as valentinite, stibiconite, and semarmontite.Of the more than …Web