... of applications. Antimony minerals, particularly stibnite, have been known and used since ancient times. Because it is so soft, stibnite ... ApplicationAntimony Ore is used to impregnate plastics, textiles, rubber, and other materials as a flame retardant – that is, a form ... a wide variety of minor uses, including medicines, fireworks, and others. Antimony oxide is a brilliant yellow color, accounting ...