Muscovite (also known as common mica, isinglass, or potash mica[6]) 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. Sheets of muscovite 5 meters × 3 meters (16.5 feet × 10 feet) have been found in Nellore, India.[7]
Muscovite has a Mohs hardness of 2–2.25 parallel to the [001] face, 4 perpendicular to the [001] and a specific gravity of 2.76–3. It can be colorless or tinted through grays, violet or red, and can be transparent or translucent. It is anisotropic and has high birefringence. Its crystal system is monoclinic. The green, chromium-rich variety is called fuchsite; mariposite is also a chromium-rich type of muscovite.
Muscovite is the most common mica, found in granites, pegmatites, gneisses, and schists, and as a contact metamorphic rock or as a secondary mineral resulting from the alteration of topaz, feldspar, kyanite, etc. It is characteristic of peraluminous rock, in which the content of aluminum is relatively high.[8] In pegmatites, it is often found in immense sheets that are commercially valuable. Muscovite is in demand for the manufacture of fireproofing and insulating materials and to some extent as a lubricant.
Muscovite (also known as common mica, isinglass, or potash mica) is a hydrated phyllosilicate mineral of aluminium and potassium with formula KAl2(AlSi3O10)(F...
Muscovy, the Grand Principality of Moscow,[better source needed] Muscovite Rus', or Muscovite Russia. The English names Moscow and Muscovy, for the city, the...
character of mica crystals. The short-range order of K+ ions on cleaved muscovite mica has been resolved. View of tetrahedral sheet structure of mica. The...
a result of traditional habit and the need to distinguish between the Muscovite and the Lithuanian part of Rus', as well as of the political interests...
Notes on Muscovite Affairs (Rerum Moscoviticarum Commentarii) (1549) was a Latin book by Baron Sigismund von Herberstein on the geography, history and...
The Battle of Orsha was part of a long series of Muscovite–Lithuanian Wars conducted by Muscovite rulers striving to gather all the former Kievan Rus'...
Russia) on 14 July 1500, during the Second Muscovite–Lithuanian War (1500–1503). In the battle of Vedrosha, Muscovite forces defeated outnumbered Lithuanian...
The Muscovite War of Succession, or Muscovite Civil War, was a war of succession in the Grand Duchy of Moscow (Muscovy) from 1425 to 1453. The two warring...
times during the 15th, 16th and 17th centuries (from the days of the Muscovite–Lithuanian Wars). A major supporter of the war was the Tsar's father,...
considerable influence over the Muscovite court as Vasily I's father-in-law between 1406 and 1430. When the Muscovite War of Succession (1425–1453) broke...
The Al-Moskobiya, Moscobiyeh, Muscovite or Moscovia Detention Centre is an Israeli detention and interrogation facility and prison more commonly known...
by its inhabitants as Rus', the Russian land (Russkaia zemlia), or the Muscovite state (Moskovskoe gosudarstvo), among other variations. In 1721, Peter...
Mikhail Skopin-Shuisky in 1609, during De la Gardie Campaign. In 1630 the Muscovite government began to hire mercenary officers in Sweden, the Netherlands...
monzogranite is 35% to 65% alkali feldspar. A granite containing both muscovite and biotite micas is called a binary or two-mica granite. Two-mica granites...
Naryshkin Baroque, also referred to as Moscow Baroque or Muscovite Baroque, is a particular style of Baroque architecture and decoration that was fashionable...
known as chrome mica, is a chromium (Cr)-rich variety of the mineral muscovite, belonging to the mica group of phyllosilicate minerals, with the chemical...
(1580–1747) Russo-Turkish War (1568–1570) Russo-Swedish War (1590–1595) Polish–Muscovite War (1605–1618) and the Time of Troubles Ingrian War Smolensk War Russo-Persian...
hand, and various incarnations of the Russian state on the other. The Muscovite–Ukrainian War (1658–1659) was a war between the Cossack state of Hetman...
(Died 1656) was a noble (boyar) Muscovite military leader and diplomat. He is better known for serving as a Muscovite envoy during negotiations with Bohdan...
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