(n.) A mineral of a lead-gray color and brilliant metallic luster, occurring in prismatic crystals; sulphide of antimony; -- called also antimony glance, and gray antimony.

argentite arsenopyrite bauxite chalcocite cinnabar crude galena iron ore ironstone limonite lodestone magnetite mineral mineral-bearing material mispickel pyrite raw material rich ore rich vein rough diamond siderite stibnite unanalyzed mass unlicked cub untreated mineral virgin soil