Feldspar is buff or white or rose color. K2O > 10% .it is finding with limited quantities.
Iron oxide is very red colour .Fe2O3 from 55% : 70% . It finds with large quantities.
Lime stone is very white and calcium carbonate is very high . It make in Paints manufacturing, cement manufacturing, ceramic manufacturing, steel manufacturing, lime Manufacturing, animals food and agriculture.
Quartz is very white and glassy. SiO2 > 99.6%. It is finding with large quantities.
Silica sand is very white. SiO2 > 99.8% and Fe2O3<0.015
Talc powder is very white. It is the first grade and high magnesium oxide.
