MINERAL COMMODITY SUMMARIES 2003 MINERAL COMMODITY SUMMARIES 20 Department of the Interior Geological Survey Abrasives Aluminum Antimony Arsenic Asbestos Barite Bauxite Beryllium Bismuth Boron Bromine Cadmium Cement Cesium Chromium Clays Cobalt Columbium Copper Diamond Diatomite Feldspar Fluorspar Gallium Garnet Gemstones Germanium ...