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| − | '''Calcium sulfate''', also known as '''gypsum''', is an unusually soft [[mineral]] that occurs in [[nature]]. | + | '''Calcium sulfate''', also known as '''gypsum''', is an unusually soft [[mineral]] that occurs in [[nature]]. Gypsum is number 2 on the [[Mohs Hardness Scale]]. Gypsum is a key ingredient in [[cement]], plaster, and drywall. Crystallized gypsum is called [[selenite]]. The [[chemical]] formula for gypsum is CaSO<sub>4</sub> · 2(H<sub>2</sub>O) <ref>http://www.white-sands-new-mexico.com/about_gypsum.htm</ref> |
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| + | ==References== | ||
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[[Category:Minerals]] | [[Category:Minerals]] | ||
Latest revision as of 03:56, July 13, 2016
Calcium sulfate, also known as gypsum, is an unusually soft mineral that occurs in nature. Gypsum is number 2 on the Mohs Hardness Scale. Gypsum is a key ingredient in cement, plaster, and drywall. Crystallized gypsum is called selenite. The chemical formula for gypsum is CaSO4 · 2(H2O) [1]