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May 25, 2024 · Mica, any of a group of hydrous potassium, aluminum silicate minerals. It is a type of phyllosilicate, exhibiting a two-dimensional sheet or ...
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Micas occuring as large crystals are often called books; these may measure up to several metres across. In most rocks, micas occur as irregular tabular masses ...
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mica , Any of a group of hydrous potassium, aluminum silicate minerals that exhibit a two-dimensional sheet, or layer, structure.
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Muscovite, abundant silicate mineral that contains potassium and aluminum. Muscovite is the most common member of the mica group.
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Mica is the name given to a group of silicate minerals that contain atoms of aluminum, oxygen, and silicon bonded into flat layers like the leaves of a book.
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Micas are a group of silicate minerals whose outstanding physical characteristic is that individual mica crystals can easily be split into extremely thin ...
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Brittle mica, any member of the mica group of silicate minerals that has calcium instead of potassium or sodium. The calcium substitution increases the ...
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White mica, fine-grained variety of any of the silicate minerals muscovite, paragonite, or talc.
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