Quartz
Slag
Clay
Gypsum
Mica flakes
Silica sand
Phlogopite mica scrap
Feldspar
Mica
Potash feldspar, potassium feldspar
Fluorspar concentrates
Graphite powder
High purity gypsum ores, gypsum
Gypsum lumps, gypsum
Quartz stone
Graphite powder, graphite
Mica
Graphite ore
Zeolite