Antimony
Antmony is named from the Greek, anti plus monos, a metal not found alone. Antimony was recognized in compounds by the ancients and was known as a metal at the beginning of the 17th century and possibly much earlier. It is not abundant but is found in over 100 mineral species. It is sometimes found native, but more frequently as the sulfide stibnite. It is extracted from the sulfide by roasting to the oxide, which is reduced by salt and scrap iron; from its oxides it is prepared by reduction with carbon. Metallic antimony is an extremely brittle metal with a flaky, crystalline texture. Commercial grade antimony is used widely in alloys. It greatly increases the hardness and mechanical strength of lead. Batteries, antifriction alloys, type metal, small arms and tracer bullets, cable sheathing and minor products use about half of the metal produced. Compounds taking up the other half are oxides, sulfides, sodium antimonate and antimony trichloride. These are used in manufacturing flame-proofing compounds, paints, ceramic enamels, glass and pottery.