Mineral characteristics of kyanite
published date: 2019/6/13
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Kyanite has various forms of AI2O3.SiO2 or AI2SiO5. The same group of minerals are sillimanite, andalusite, which are the constituents of the original clay-like composition. They are subjected to strong compressive shear stress and deteriorate under high temperature and high pressure. Produced is an anhydrous aluminosilicate mineral, which is a high-alumina mineral raw material.
The crystal form of kyanite is usually flat column shape, mostly blue or blue gray, light white, etc., with glass luster. The hardness is different in different directions. It expands at high temperature, and then shrinks after cooling. High temperature resistance, acid and alkali resistance, corrosion resistance, strong impact resistance, high thermal strength and good electrical insulation.