Chemical Formula: CaSO4.2H2O

Chemical Name: Hydrous Calcium Sulphate

Mineral Class: Sulphate

Mineral Notes: Gypsum is the commonest sulfate. It is a major rock forming mineral that forms massive beds, usually from precipitation out of highly saturated waters. Since it forms easily from saline water, gypsum may have many inclusions of other minerals and even trapped bubbles of air and water.