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Muscovite vs. Biotite

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Muscovitenoun

(mineral) A pale brown mineral of the mica group, being a basic potassium aluminosilicate with the chemical formula KAl2(Si3Al)O10(OH,F)2; used as an electrical insulator etc.

Biotitenoun

(mineral) A dark brown mica; it is a mixed aluminosilicate and fluoride of potassium, magnesium and iron.

Muscovitenoun

A native or inhabitant of Muscovy or ancient Russia; hence, a Russian.

Biotitenoun

Mica containing iron and magnesia, generally of a black or dark green color; - a common constituent of crystalline rocks. See Mica.

Muscovitenoun

An inhabitant of Moscow.

Biotitenoun

dark brown to black mica found in igneous and metamorphic rock

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Muscovitenoun

Common potash mica, essentially KAl3Si3O10(OH)2. It is used as an electrical insulator. See Mica.

Biotite

Biotite is a common group of phyllosilicate minerals within the mica group, with the approximate chemical formula K(Mg,Fe)3AlSi3O10(F,OH)2. It is primarily a solid-solution series between the iron-endmember annite, and the magnesium-endmember phlogopite; more aluminous end-members include siderophyllite and eastonite.

Muscovitenoun

a colorless or pale brown mica with potassium

Muscovitenoun

a resident of Moscow

Muscoviteadjective

of or relating to the residents of Moscow;

‘Muscovite street dealers’;

Muscovite

Muscovite (also known as common mica, isinglass, or potash mica) is a hydrated phyllosilicate mineral of aluminium and potassium with formula KAl2(AlSi3O10)(F,OH)2, or (KF)2(Al2O3)3(SiO2)6(H2O). It has a highly perfect basal cleavage yielding remarkably thin laminae (sheets) which are often highly elastic.

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