Question

$5 \: uses \: of \: mica.....$
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Answer 1

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Uses of Mica:

$\orange\Rightarrow$ used as a shimmering powder accent in jewelry.

$\orange\Rightarrow$joint compound for filling and finishing seams and blemishes in gypsum wallboard

$\orange\Rightarrow$acts as a filler and extender, provides a smooth consistency, improves the workability of the compound, and provides resistance to cracking.

$\orange\Rightarrow$substitute for glass in stove windows.

$\orange\Rightarrow$ often used in makeup foundations,

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Answer 2

Explanation:

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Any natural occurring mineral that is based on a collection of silicate minerals and composed of varying amounts of potassium, iron, aluminium, magnesium and water is Mica. It can resist nearly all mediums like chemicals, acids, gasses, alkalies, and oils.

Mica belongs to a very important and rather large group of minerals that are highly suitable for several applications. However, its advanced properties make it highly suitable for use in various places. These are:

• Physical: Mica is translucent, easily split into thin films along its cleavage, optically flat, colorless in thin sheets, elastic and incompressible.

• Chemical: It is a compound hydrous silicate of aluminum, which also contains iron, magnesium, potassium, sodium fluorine, lithium and also few traces of numerous other elements. It is constant and entirely static to the action of water, acids (except for hydrofluoric and concentrated sulphur), alkalies, conventional solvents, bases, and oil. It remains almost unchanged by atmospheric action.

• Electrical: Mica has the exclusive combination of uniform dielectric steadiness, capacitance stability, enormous dielectric power, high Q factor and lower power loss, high electrical resistance and low temperature coefficient. It is highly regarded for its resistances to arc and corona discharge without causing any lasting injury.

• Thermal: It is highly fire proof, incombustible, non- flammable, infusible, and also can resist temperatures of up to 1000 degrees Celsius/1832 degrees Fahrenheit. However this depends on the type and variety of Mica used. It has excellent thermal stability, lower heat conductivity, and can be easily exposed to high temperatures without visible effect.

• Mechanical: Mica is highly tough, having high tensile strength, elastic, and along with being flexible. It has immense compression power and can be machined, die-punched, or hand cut.

$\star\underline{\underline\purple{Uses \: of \: Mica :}}$

1. It is used in paints as a pigment extender and also helps to brighten the tone of coloured pigments.
2. It is a superior insulator. So in the electrical industry it is used as thermal insulation, and in electronic equipment as electrical insulators.
3. Its shiny and glittery appearance makes it ultimate for toothpaste and cosmetics .
4. It is invariably used for fillers, extenders along with providing smoother uniformity, improving workability and prevents cracking.
5. It can be used as an insulator in home attics, concrete blocks and also poured into open top walls.
6. It can also be added to grease to increase its durability and giving it a better surface.
7. It can also be used as a soil conditioner particularly in potting soil mixes and in gardening plots.

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