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What are the colors of mica?

Color purple, rosy, silver, gray (lepidolite); dark green, brown, black (biotite); yellowish-brown, green-white (phlogopite); colorless, transparent (muscovite)
Cleavage Almost perfect
Fracture flaky
Mohs scale hardness 2.5–4 (lepidolite); 2.5–3 biotite; 2.5–3 phlogopite; 2–2.5 muscovite

What Luster is biotite?


How can you tell if mica is biotite?

Biotite is very easy to identify, and with a little experience a person will be able to recognize it on sight. It is a black mica with perfect cleavage and a vitreous luster on the cleavage faces. When biotite is separated into thin sheets, the sheets are flexible but will break upon severe bending.

What is the color of biotite?


What Colour is amphibole?

Amphiboles yield water when heated in a closed tube and fuse with difficulty in a flame. Their colour ranges extensively from colourless to white, green, brown, black, blue, or lavender and is related to composition, principally the iron content.

What is the difference between muscovite and mica?

is that muscovite is (mineralogy) a pale brown mineral of the mica group, being a basic potassium aluminosilicate with the chemical formula k]]al2(si3al)o10(oh,[[fluorine|f)2; used as an electrical insulator etc while mica is any of a group of hydrous aluminosilicate minerals characterized by highly perfect cleavage.

Is Mica dangerous to health?

* Mica can affect you when breathed in. * Repeated high exposure to the dust can irritate the lungs and may cause lung scarring (fibrosis). This causes an abnormal chest x-ray, cough and shortness of breath. Mica is an often transparent, odorless solid that separates into flakes or thin sheets.

Is Mica bad for the skin?

The biggest benefit of mica is its ability to create a natural shimmery finish, since it can be milled to a fine powder. Because it is naturally produced it is a particularly well-loved ingredient among organic and natural beauty brands, and is safe to use on almost all skin types with little to no side effects.

What Mica is used for?

Mica insulation is used in high-temperature and fire-resistant power cables in aluminium plants, blast furnaces, critical wiring circuits (for example, defense systems, fire and security alarm systems, and surveillance systems), heaters and boilers, lumber kilns, metal smelters, and tanks and furnace wiring.

Is Mica in all makeup?

Mica is a naturally occurring mineral dust often used in makeup foundations, as filler in cement and asphalt, and as insulation material in electric cables. FOUND IN: Makeup products, shingles, wallpaper, insulation, cement and asphalt.

Who is the biggest producer of gold?


Which country is largest producer of bauxite?


Where is bauxite mostly found?

Bauxite is typically found in topsoil located in various tropical and subtropical regions. The ore is acquired through environmentally responsible strip-mining operations. Bauxite reserves are most plentiful in Africa, Oceania and South America.

Which country has best iron ore?

Who is the largest iron ore producer in Australia?

Western Australia