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The Calcite has another name calcspar. Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (CaCO3). It has a Mohs hardness of 3, a specific gravity of 2.71, and its luster is vitreous in crystallized varieties. Color is white or none, though shades of gray, red, yellow, green, blue, violet, brown, or even black can occur when the mineral is charged with impurities. Calcite is transparent to opaque and may occasionally show phosphorescence or fluorescence. A transparent variety called Iceland spar is used for optical purposes.
Calcite is a common constituent of sedimentary rocks, limestone in particular, much of which is formed from the shells of dead marine organisms. Approximately 10% of sedimentary rock is limestone. Calcite is the primary mineral in metamorphic marble. It also occurs as a vein mineral in deposits from hot springs, and it occurs in caverns as stalactites and stalagmites.
The mineral is worked by shallow pits. During mining the calcite is sorted out into different grades depending upon the colours as they fetch different prices and also, because their suitability depends upon the colours. The mineral is used invariably in the form of fine powder. Few important mine-owners have their own pulverizing plants; others sell to pulverizers. Generally calcite is supplied in three qualities: Best white (super-fix), White (Calico), Grey white (Gemco). Calcite/calcspar Applications
In Calcite Applications that must be use our stone crusher and grinding mill. Crush Calcite into different particle size, grind it into different fineness, so that you can use it in the following areas:
Calcite for optical industries
The transparent and clear crystals are used in the optical industry, for the manufacture of nicol prism. Principal characteristics which make iceland-spar of special value for use in optical instruments are its very high birefringence, high degree of purity, perfect crystalline structure and transparency. The mineral must be in pieces at least 25mm. long, 12mm. thick, colorless, transparent and free from cloudy inclusions, cavities, and foreign substances.
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- PE150 * 250 Jaw Crusher
Hammer crusher mill directly to a maximum particle size of 600-1800 mm material crushing to a period of 25 or 25 mm crusher crusher. Hammer crusher is suitable for crushing medium hardness material, such as limestone, slag, coke, coal and other mater...
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PE150 * 250 Jaw Crusher is widely used in mining, metallurgy, building materials, road, railway, water conservancy and chemical industry and many other sectors, crushing various materials with compressive strength less than 320 MPa. PE150 * 250 Jaw ...