Carbon graphite slabs
Sulphur bentonite
Sulphur bentonite
Talc powder bottles
Clay, firewood
Sodium Bentonite
Graphite electrode
Food grade talc powder, talcum powder
Silica sand 800 1000 micron 99 % fe less than .05%
Zinc, graphite,
Zirconium Metal Zr. Oxide Zro2
Float glass, sludge
Coal, fly ash
4a Zeolite Detergent Powder
Potassium feldspar
Potassium and sodium feldspar
Soda ash, feldspar
Quartz powders, quartz grits, resin
Silicon, quartz 90 percent
Quartz crystal like rose quartz citrine, black tourmaline