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云母族矿物分为两个亚族,共有九种矿物。白云母亚族,有钠云母、白云母、钒云母、海绿石;金云母-黑云母亚族,有金云母-黑云母、锌三层云母、铁锂云母、锰锂云母、铜铀云母和锂云母。
Mica is with lithium, sodium, potassium, magnesium, aluminum, zinc, iron, vanadium and other metal elements and water with layer structure of aluminum silicate group minerals general. Include muscovite, biotite, phlogopite, lepidolite, etc.. Industrial application of mica minerals are muscovite and phlogopite mica and broken pieces of mica and sericite, muscovite is used frequently, followed by phlogopite. Since mica has a high electric insulation, good transparency, excellent points of peelable, high chemical stability, good high-temperature reducing and maintaining the good state of physical and chemical properties, which It is a very important mainly as insulation material widely used in electronic, electrical, telecommunications, electronics, aviation, transportation, instrumentation, metallurgy, building materials, light industry and other industrial sectors, as well as national defense and cutting-edge industries. Since the 70s, due to the capacitor, the motor insulation support material and dielectric material, used by a broken piece of mica has been made of mica mica paper as raw materials replaced by the vast majority of communication tube has been replaced by semiconductor integrated circuits caused a fundamental change in consumption structure, thus making a significant decline in demand for film mica, and crushed mica growing demand. With the development of science and technology in recent years, mica minerals in building materials, geological exploration, lubricants, paints, food, cosmetics and other applications continue to expand, broken mica and sericite mineral raw materials will have broad application prospects.
Chemical Composition: Muscovite chemical formula KAl2 (AlSi3O10) (OH) 2; magnesium phengite chemical formula (Fe2 +, M g) (Fe3 +, Al3 +) (AlSi7O20) (OH) 4; sericite chemical formula KAl2 (Si, Al ) 4O10 (OH, F) 2; gold mica chemical formula KMg3 (AlSi3O10) (F, OH) 2 aluminum silicate mineral mica that has a continuous layered silicate structure, with very full of cleavage, may The thin strip is flexible, quality soft flexible, transparent, colorless, thick block with translucent gray, brown, light green, rose red, with glass to silk or pearl luster, hardness 2.5 to 3, the proportion of 2.75 ~ 3.0 acid resistance.
