... metallic mineral: kaolin, talc powder, barite, quartz, graphite, calcium carbonate ( heavy, light ), mica, vermiculite, leaf Lashi, spinel, attapulgite, wollastonite, water magnesium ... stone, bentonite clay, limestone, diatomite, rectorite, sepiolite, petroleum coke ...Metallic and oxide material: iron, tantalum powder, powder, spherical aluminium powder ...