Common Sulfate Minerals Anhydrous Sulfates Barite-- BaSO4 Celestite--SrSO4 Anglesite--PbSO4 Anhydrite--CaSO4 Crocoite--PbCrO4 Hydrous and Basic Sulfates Gypsum--CaSO4.2H2O Chalcanthite--CuSO4.5H2O Epsomite-- MgSO4.7H2O Antlerite-Cu3(OH)4SO4 Alunite--KAl3(OH)6(SO4)2 The links above will take you to the Mineral Gallery website (http://www.galleries.com).

The basic unit of the sulfate minerals are the SO4 groups. These groups combine with metals to form the sulfate minerals. A large number of minerals belong to this class, but only a few of them are common. The class can be divided into the anhydrous (no water) sulfates and the hydrous (water) and basic sulfates. Barite. More than 80% of the barite used is in the oil and gas industry. The name comes from the Greek, meaning heavy. Gypsum. Commonly found in sedimentary rocks. An extensive gypsum deposit is found at White Sands National Monument, New Mexico.

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Mineral Groups