hornblende Synonyms

ferroedenite lepidomelane iolite gypsum graphite glauconite garnet fluorite feldspar pargasite trachyte ferroactinolite hard black stone hard greyish-black stone hedenbergite galaxite fluorspar diatomite zoisite emery crystal cryolite brimstone boron bauxite barite azurite asbestos aragonite amphibole brookite calcite corundum cobalt coal clay chromite chlorite chalcedony carbon alabaster