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Learn about mica , a group of silicate minerals with remarkable sheet-like structure and properties. Discover its formation, distribution, types, and applications in various fields. Mica Mica is a mineral name given to a group of minerals that are physically and chemically similar. They are all silicate minerals , known as sheet silicates because they form in distinct layers. Micas are fairly light and relatively soft, and the sheets and flakes of mica are flexible. Mica is heat-resistant and does not conduct electricity. There are 37 different mica minerals . The most common include: purple lepidolite, black biotite, brown phlogopite and clear muscovite. Mica, any of a collection of hydrous potassium, aluminum silicate minerals . It is a kind of phyllosilicate, showing a -dimensional sheet or layer structure. Mica , which is essentially a compound of silicate minerals , is comprised of closely related materials that have perfect basal cleavage. They belong to the category of principal rock-forming minerals and are found in various categories like sedimentary, igneous, and metamorphic.
