CaSO₄ · 2H₂O - Mohs Hardness: 2. Gypsum is found in nature in mineral and rock form. It is a very soft mineral and it can form very pretty, and sometimes extremely large colored crystals. Gypsum is commonly associated with rock salt and sulfur deposits. It is processed and used as prefabricated wallboard or as industrial or building plaster, used in cement manufacture, agriculture and other uses.
UT Department of Environmental Sciences
The University of Toledo
Digital Initiatives, University of Toledo Libraries
environmental sciences; virtual exhibitions
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