Mica

Mica

The Mica group of sheet silicates fondly called book of Mica consists of flaky minerals with perfect cleavage. It includes of Lepidolite, Biotite, Muscovite, Phlogopite and many others. Its colors include purple, grey, black, green and colorless. It occurs in igneous, metamorphic and sedimentary rocks. It is common in pegmatite of central Nigeria and can be found in Ekiti, Oyo, Lokoja, and Kwara states.

To be of economic value, it has to be found in unbroken sheets several centimeters across and free from inclusions. Large crystals of Mica are mined from Granitic Pegmatite. It has several uses depending on the type of Mica. Mica is used in producing many kinds of electrical equipment, paints, as pigment extenders, additives, in drilling fluids, as insulators and peepholes in boilers and stoves. It is mined through open-pit mining

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27 May 2017
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