Mica

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High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! The mica group of sheet silicate (phyllosi...

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High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! The mica group of sheet silicate (phyllosilicate) minerals includes several closely related materials having highly perfect basal cleavage. All are monoclinic with a tendency towards pseudo-hexagonal crystals and are similar in chemical composition. The highly perfect cleavage, which is the most prominent characteristic of mica, is explained by the hexagonal sheet-like arrangement of its atoms. The word "mica" is thought to be derived from the Latin word micare, meaning "to glitter", in reference to the brilliant appearance of this mineral (especially when in small scales).