Muscovite vs. Phlogopite

(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.

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

An inhabitant of Moscow.

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

a colorless or pale brown mica with potassium

a resident of Moscow

of or relating to the residents of Moscow;

Example: ‘Muscovite street dealers’;

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.

(mineral) A mica mineral with the chemical formula KMg3AlSi3O10(F,OH)2, a basic potassium magnesium aluminosilicate, used as an insulator

A kind of mica having generally a peculiar bronze-red or copperlike color and a pearly luster. It is a silicate of aluminia, with magnesia, potash, and some fluorine. It is characteristic of crystalline limestone or dolomite and serpentine. See Mica.

a brown form of mica consisting of hydrous silicate of potassium and magnesium and aluminum

Phlogopite is a yellow, greenish, or reddish-brown member of the mica family of phyllosilicates. It is also known as magnesium mica.