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Stones and soil
Examples:
Aluminium oxide
Basalt
Basalt sand
Bauxite
Bentonite
Blasting shot
Boiler ash
Calcium carbonate
Cat litter
Chalk
Clay
Corrundum
Cushed erated concretes
Diabas
Dolomite
Enamel powder
Enamel sludge
Erated concrete
Exolit
Feldspar
Filler
Flint
Foundry sand
Glass
Glass cullet
Glass powder
Glazes
Granite
Gravel
Grinding agent
Gypsum
Huntite
Kaolin
Lime
Lime gravel
Limestone
Magnesite
Magnesium Hydroxide
Magnesiumoxide
Marble
Mica
Pearlite
Pumice stone
Quartzite
Refractory
River sand
Sand
Screed sand
Silica
Silica sand
Silicic acid
Silicium carbide
Slag
Slate
Slip
