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en.wikipedia.org/wiki/Muscovite

Muscovite (also known as common mica, isinglass, or potash mica) is a hydrated phyllosilicate mineral of aluminium and potassium with formula K Al 2 (AlSi 3 O 10)(FOH) 2, or 2 (Al 2 O 3) 3 (SiO 2) 6 (H 2 O).It has a highly perfect basal cleavage yielding remarkably thin laminae (sheets) which are often highly elastic.Sheets of muscovite 5 meters × 3 meters (16.5 feet × 10 feet) have been ...

geology.com/minerals/muscovite.shtml

What is Muscovite? Muscovite is the most common mineral of the mica family. It is an important rock-forming mineral present in igneous, metamorphic, and sedimentary rocks.Like other micas it readily cleaves into thin transparent sheets.

www.minerals.net/mineral/muscovite.aspx

Muscovite is the most common form of mica.Its name is derived from "Muscovy Glass", which describes thick sheets of transparent mica that were once used as a glass substitute in Russia.

www.mindat.org/min-2815.html

Mica Group. The most common of the Mica Group minerals, it is typically found as massively crystalline material in "books" or in flaky grains as a constituent of many rock types.

www.britannica.com/science/muscovite-mineral

Muscovite: Muscovite, abundant silicate mineral that contains potassium and aluminum. Muscovite is the most common member of the mica group. Because of its perfect cleavage, it can occur in thin, transparent, but durable sheets. Sheets of muscovite were used in Russia for windowpanes and became known as

www.dictionary.com/browse/muscovite

Muscovite definition, a native or inhabitant of Moscow. See more.

webmineral.com/data/Muscovite.shtml

Muscovite Crystallography: Axial Ratios: a:b:c =0.5747:1:2.2203 : Cell Dimensions: a = 5.19, b = 9.03, c = 20.05, Z = 4; beta = 95.5° V = 935.33 Den(Calc)= 2.83

en.wikipedia.org/wiki/Brittle_mica

Mica is widely distributed and occurs in igneous, metamorphic and sedimentary regimes. Large crystals of mica used for various applications are typically mined from granitic pegmatites.. Until the 19th century, large crystals of mica were quite rare and expensive as a result of the limited supply in Europe.

www.spiritrockshop.com/Muscovite.html

Muscovite is a silicate material that contains potassium and aluminum. It is also known as Mica or Isinglass. Muscovite may form in layers of sheets ("Books") which are clear with a pearly luster on cleavage faces. Muscovite and Albite var Clevelandite

pubchem.ncbi.nlm.nih.gov/compound/Muscovite

MICA, a generic term, refers to any of a group of approximately 30 silicate minerals occurring as non-fibrous plates. Muscovite (hydrated aluminium potassium silicate[KAl2(AlSi3O10)(F, OH)2 ])and phlogopite (potassium magnesium aluminum silicate hydroxide) are the two major micas of commerce.