What are the types of mica

mica is a kind of rock forming minerals, usually show false six-party or diamond plate, sheet, columnar crystal shape. Of mica mineral were in one of the most common minerals are kind of sericite, white mica, bronze mica, lithium mica, black mica, etc.

sericite ( Sericite） Is one of the types of mica, it belongs to the silicate minerals with layered structure. Sericite has a wide range of USES, used in rubber, plastic, paint, paint, ceramics, heat preservation, the cosmetics, paint, paper making, metallurgy and other industries. Sericite crystal as scaly, crystal aggregation block, gray, purple rose, white, with a silky luster. Mica used in coating, can greatly improve the weatherability of coating, water permeability resistance, increase the coating adhesion with the substrate and coating strength, improve the apparent coating.

phlogopite is one of the white mica class mineral, it is a kind of iron, magnesium and potassium aluminum silicate. Phlogopite composition of iron, if not more, it can be used as electrical insulating materials, and thus plays an important role. Phlogopite chemical composition: KMg3 [ Si3AlO10] ( OH,F) 2, class with broad like the quality, so the output in different rock of biotite, its chemical composition of the gap is very large. Phlogopite have artificial phlogopite ( Synthesis of phlogopite) And natural phlogopite, natural phlogopite darker gold phlogopite mica and light color. Phlogopite complete cleavage with the characteristics of mica and yellow brown color and similar golden reflections. With the white mica difference is, can in the boiling sulfuric acid decomposition, producing & ndash; Kind of emulsion solution, while white mica can't; In industry with the most is white mica, mica followed by gold. With the biotite difference is, the color is lighter. Phlogopite chiefly ultrabasic rock such as kimberly, and dolomitic marble contact metamorphic zone. Impure magnesian limestone subjected to regional metamorphism in the process, also can form.

biotite widely used in the industries of building material industry, fire fighting, fire extinguishing agent, welding electrode, plastic, electrical insulating paper, paper making, asphalt, rubber, pearl pigment chemical industry, etc. Ultrafine mica powder for plastic, paint, paint, rubber, such as the functional filler, can improve the mechanical strength, strengthened toughness, anti-aging adhesion and corrosion resistance, etc. In addition to the high electrical insulation, acid and alkali corrosion resistance, flexibility, toughness and sliding resistance, heat insulation, small thermal expansion coefficient, and take the lead in put out of block 2 surface is smooth, thick than large diameter, shape rules, strong adhesion, etc. Black and phlogopite mica crystal form are the same. With complete cleavage mica, and after heating, can be slightly magnetic characteristics to differentiate in deep rock and shallow diagenetic clock, especially the acidic or alkaline rocks, mostly contains black mica.

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