It is a calcium silicate mineral with the molecular formula CaSiO4. Sometimes, it is used as a buffering effect in acid solutions due to the release of calcium ion. It has moderate hardness and high dry brightness together with improved corrosion and blistering resistance.
The common name to it is Limestone. It is commonly used as a cheapening filler in various industries. Chemically, it is calcium carbonate.
Chemically, it is hydrated magnesium silicate whereby it is insoluble in water. It is soft, non-abrasive, inert mineral that acts as a functional filler for various industries such as paint, plastic, rubber, etc.