Muscovite

Mus·co·vite

M0491800 (mŭs′kə-vīt′)n. A native or resident of Moscow or Muscovy.adj. Of or relating to Moscow, Muscovy, or the Muscovites.

mus·co·vite

M0491800 (mŭs′kə-vīt′)n. A potassium aluminum silicate mineral, KAl₂(AlSi₃O₁₀)(OH)₂, the most common form of mica, which ranges from colorless or pale yellow to gray and brown, has a pearly luster, and is used as an insulator. Also called white mica.

[Muscovy glass, its former name + -ite.]

muscovite

(ˈmʌskəˌvaɪt) n (Minerals) a pale brown, or green, or colourless mineral of the mica group, found in plutonic rocks such as granite and in sedimentary rocks. It is used in the manufacture of lubricants, insulators, paints, and Christmas "snow". Composition: potassium aluminium silicate. Formula: KAl2(AlSi3)O10(OH)2. Crystal structure: monoclinic. See also mica[C19: from the phrase Muscovy glass, an early name for mica]

Muscovite

(ˈmʌskəˌvaɪt) n (Peoples) a native or inhabitant of Moscowadj1. (Peoples) an archaic word for Russian2. (Languages) an archaic word for Russian

Mus•co•vite

(ˈmʌs kəˌvaɪt)

n. 1. a native or inhabitant of Moscow. 2. a native or inhabitant of the Grand Duchy of Muscovy. 3. (l.c.) common light-colored mica, essentially KAl₃Si₃O₁₀(OH)₂, used as an electrical insulator. 4. Russian (def. 1a). adj. 5. of or pertaining to Moscow, Muscovy, or the Muscovites. [1545–55]

mus·co·vite

(mŭs′kə-vīt′) A usually colorless to pale-gray mineral composed mostly of a silicate of potassium and aluminum. Muscovite is one of the most common forms of mica.

Thesaurus

Noun	1.	muscovite - a colorless or pale brown mica with potassiumdamourite - a variety of muscoviteisinglass, mica - any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity
	2.	Muscovite - a resident of MoscowRussian - a native or inhabitant of Russia
Adj.	1.	Muscovite - of or relating to the residents of Moscow; "Muscovite street dealers"

Translations

moscovitemoscovitaMoskovietmoscovitaмосквичмосквичка

Muscovite

muscovite:

see micamica
, general term for a large group of minerals, hydrous silicates of aluminum and potassium, often containing magnesium, ferrous iron, ferric iron, sodium, and lithium and more rarely containing barium, chromium, and fluorine.
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Muscovite

(from Muscovy, the old name for Russia, from where large sheets of the mineral were exported to the West under the name of Muscovy glass), a mineral from the mica group with the empirical formula KA1₂[[AlSi₃O₁₀] • (OH)₂. Crystals are tabular and in the monoclinic system. Basal cleavage is extremely perfect. Muscovite is easily split into very thin sheets. This is caused by its crystalline structure, which is composed of three-layer packets of two sheets of aluminum-oxygen and silicon-oxygen tetrahedrons connected through a layer of octahedrons, in the center of which are located aluminum ions, each surrounded by four oxygen ions and two OH groups. One-third of the octahedrons are not filled with aluminum ions. The packets are interconnected through potassium ions.

Muscovite has a hardness on Mohs’ scale of 2.5–3; its density is 2,760–3,100 kg/m³. The mineral is usually colorless; sometimes, light brown, pale green, or other colors. Its luster is vitreous; on the cleavage planes the luster is pearly or silvery. Muscovite is sometimes found as cryptocrystalline masses with a silky luster. In this form it is called sericite.

Muscovite is a widespread mineral and is found as a component of magmagene rocks and also metamorphic rocks such as granites, granite pegmatites, syenites, greisens, crystalline schists, and gneisses. Of industrial significance is the muscovite recovered from pegmatite veins, where the mineral occurs as large crystals or as accumulations measuring 1–2 m thick.

Muscovite is most frequently used in electrical insulation. In industry, it is used in the form of sheet mica (for insulators, condensers, and telephones), mica powder (for roofing paper, mica board, and fireproof paints), and mica products (for electrical insulating gaskets in electric instruments). In the USSR, muscovite deposits are found on the Kola Peninsula and in Eastern Siberia near Mama and Kanska. Muscovite is also found in India, the Malagasy Republic, Canada, the United States, and Brazil.

muscovite

[′məs·kə‚vīt] (mineralogy) KAl₂(AlSi₃)O₁₀(OH)₂ One of the mica group of minerals, occurring in some granites and abundant in pegmatites; it is colorless, whitish, or pale brown, and the crystals are tabular sheets with prominent base and hexagonal or rhomboid outline; hardness is 2-2.5 on Mohs scale, and specific gravity is 2.7-3.1. Also known as common mica; mirror stone; moscovite; Muscovy glass; potash mica; white mica.

Muscovite

1. a native or inhabitant of Moscow 2. an archaic word for Russian

Muscovite

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Mus•co•vite

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Words related to muscovite

noun a colorless or pale brown mica with potassium

Related Words

noun a resident of Moscow

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