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Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO 4 ·2H 2 O. It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster , drywall and blackboard or sidewalk chalk .
- Massive, flat. Elongated and generally prismatic crystals
- Prismatic (2/m), H-M symbol: (2/m)
- 1.5–2 (defining mineral for 2)
- Monoclinic
Mar 19, 2024 · Gypsum is a common sulfate mineral composed of hydrated calcium sulfate. It has various forms and uses, such as plaster, cement, and ornamental stone, and is found in many countries and regions.
- The Editors of Encyclopaedia Britannica
Sep 9, 2023 · Learn about gypsum, a soft sulfate mineral composed of calcium sulfate dihydrate, with various applications in construction, agriculture, industry, and art. Discover its chemical properties, formation, occurrence, and deposits, and how it changes with heat and moisture.
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Gypsum is a common sulfate mineral that has been used for thousands of years in construction, agriculture, and ornamental purposes. Learn about its physical and chemical properties, varieties, and uses of gypsum in this article by Hobart M. King, PhD, RPG.
Gypsum is a soft, white, hydrated calcium sulfate mineral that forms in sedimentary settings. It has many applications in construction, art, medicine and agriculture, and can be identified by its hardness, cleavage and solubility in water.
- (CaSO4-2H2O)-Hydrated Calcium Sulfate
- 2.3 (feels rather light)
- 2 (very soft)
Feb 24, 2024 · Learn about gypsum, a soft sulfate mineral composed of calcium sulfate dihydrate, and its formation, properties, and applications. Find out how gypsum is used in plaster, drywall, fertilizer, and more.
Commodity Description. Gypsum is a versatile mineral with hundreds of uses for thousands of years. The earliest use of gypsum plaster dates to about 8000 BCE with the discovery of its use in Anatolia (Turkey). Gypsum plaster was used as early as 7000 BCE as a construction material in Egypt.
