collection from raw minerals and ores with names

antimonite arsenopyrite background barite baryte bauxite bog bornite chromite collage collection copper crystal crystalline description ferruginous galena geological hematite ilmenite iron isolated itabirite jaspillite limonite magnesite magnetite mineral molybdenite name natural ore perovskite pisolite pyrite quartzite raw rock sample set specimen sphalerite sphene stibnite stone taconite titanite various white wolframite