gypsum, common sulfate mineral of great commercial importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In well-developed crystals the mineral commonly has been called selenite. The fibrous massive variety has a silky lustre and is called satin spar; it is translucent and opalescent and is valued for ornaments and jewelry. The fine-grained massive variety called alabaster is carved and polished for statuary and ornamental use when pure and translucent. Gypsite is the earthy pulverulent variety. Gypsum occurs in extensive beds associated with other evaporite minerals (e.g., anhydrite and halite), particularly in Permian and Triassic sedimentary formations; it is deposited from ocean
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Gypsum is a mineral known for its binding abilities. It is used to make Portland cement, provide plant nutrition and is found in many everyday items like
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Those close to the mining and construction industries are familiar with gypsum as an important industrial mineral and product, but others may not be aware of just how much it is used throughout our daily lives.
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Stunning, giant crystals made of gypsum selenite in the Cave of the Crystals in Mexico — 300 meters below ground. They are considered to be the largest natural crystals in the world.
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As we all know, energy conservation in the building there is still a great potential for development, nearly 40% of the energy use and the building. Gypsum building materials as a recognized environmental protection building materials, by more and more attention, its application in the construction of the scope of science and technology support is gradually expanded, large and complex high-tech content system, small to facilitate the use of the public installation Simple parts, can find the figure of gypsum.
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