The ore CaSO₄·H₂O has the general name ?

Gypsum is a naturally occurring mineral composed of calcium sulfate dihydrate (CaSO₄·2H₂O). The formula CaSO₄·H₂O refers to monohydrate gypsum, a common ore form that contains one molecule of water of crystallization per formula unit. Gypsum is soft, white or colorless, and is found in sedimentary rock formations worldwide.

Gypsum is extensively used in construction, especially in the manufacture of plaster, plasterboard, and cement. When heated to about 150°C, gypsum loses water to form plaster of Paris (CaSO₄·½H₂O), which is a fast-setting material used for making molds, decorative elements, and building panels.

Chemically, gypsum serves as a source of calcium and sulfur. It is also applied to soil to improve fertility, especially in sodic and alkaline soils, and to provide essential nutrients like calcium and sulfur for plants.

Gypsum should not be confused with:

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  Dolomite (CaMg(CO₃)₂), a carbonate mineral used in ceramics and agriculture.

  
  


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  Calcite (CaCO₃), the main component of limestone, chalk, and marble.

  
  


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  Plaster of Paris (CaSO₄·½H₂O), which is the dehydrated form of gypsum prepared by heating.

  
  

The chemical formula CaSO₄·H₂O clearly identifies it as gypsum. Its properties include softness, solubility in acidic solutions, and the ability to be molded when heated. These characteristics make it valuable in building materials, agriculture, and industry.

Therefore, the general name of the ore CaSO₄·H₂O is gypsum, a widely used and important mineral in inorganic chemistry and industrial applications