Barite
Clays (bentonit , kaolin)
Feldspar
Gypsum
Silica
Mica
Sand
Granite
Dolomite
Travertine and marble
Pumice and pozzolan
Clays (bentonit , kaolin)
Quartz (silica)
Fireclay
Halite (sodium chloride–salt)
Pumice and pozzolan
Quartz (silica)
Fireclay
Halite (sodium chloride–salt)