Muscovite

KAl2(AlSi3O10)(OH)2

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Muscovite is the most common mica and an important rock-forming silicate with the formula KAl2(AlSi3O10)(OH)2. Its perfect basal cleavage allows it to be split into extremely thin, flexible, transparent sheets, a property that led to its historical use as window glass known as Muscovy glass. The mineral crystallizes in the monoclinic system as tabular or pseudo-hexagonal books, showing a vitreous luster, a colorless streak, and colors from colorless through silver-white to pale green. Its Mohs hardness is 2 to 2.5 and its specific gravity 2.77 to 2.88. Its low hardness of 2 to 2.5 and elastic sheets are shared across the mica group, of which muscovite is the light-colored representative.

Muscovite is the most common mica mineral and an important rock-forming silicate. Its perfect basal cleavage allows it to be split into extremely thin, flexible, transparent sheets. These sheets were historically used as window glass (Muscovy glass).

Sistem Kristal Monoclinic
Kelas Mineral 09 Silicates
Kekerasan Mohs 2.0-2.5
Berat Jenis 2.77-2.88
Warna Colorless, silver-white, pale green
Kilap Vitreous
Gores Colorless
Belahan Perfect basal {001}
Pecahan Uneven
Transparansi Transparent
Bentuk Kristal Tabular, pseudo-hexagonal books

Kekerasan Mohs

Mohs Hardness: 2,0 – 2,5
1 Soft10 Hard
Muscovite has a Mohs hardness of 2–2.5 on the 1–10 mineral hardness scale.
Kekerasan Mohs Reference Mineral
1 Talc
2 Gypsum
3 Calcite
4 Fluorite
5 Apatite
6 Orthoclase
7 Quartz
8 Topaz
9 Corundum
10 Diamond

Sistem Kristal

Monoclinic
Muscovite crystallizes in the Monoclinic crystal system.
Sifat Value
Sistem Kristal Monoclinic
Axial Relationships a ≠ b ≠ c, α = γ = 90°, β ≠ 90°

Frequently Asked Questions

What is the hardness of Muscovite?
Muscovite has a Mohs hardness of 2.0-2.5.
What crystal system does Muscovite belong to?
Muscovite crystallizes in the Monoclinic crystal system.
What color is Muscovite?
Muscovite is typically Colorless, silver-white, pale green.
What type of luster does Muscovite have?
Muscovite exhibits a Vitreous luster.
What is the chemical formula of Muscovite?
The chemical formula of Muscovite is KAl2(AlSi3O10)(OH)2.