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An Entity of Type : dbkwik:resource/TGVw_48bfxR4O_s_eW_eZQ==, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

A silicate mineral which has a pearly luster. Symbolizes recovery of motivation.

AttributesValues
rdf:type
rdfs:label
  • Muscovite
  • Muscovite
rdfs:comment
  • A silicate mineral which has a pearly luster. Symbolizes recovery of motivation.
  • Muscovite (also known as common mica, isinglass, or potash mica) is a 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 laminæ (sheets) which are often highly elastic. Sheets of muscovite 5×3 m have been found in Nellore, India.
sameAs
dcterms:subject
Sell
  • 1500(xsd:integer)
Buy
  • --
dbkwik:ragnarok/pr...iPageUsesTemplate
Hardness
  • 2(xsd:integer)
Name
  • Muscovite
Type
  • Miscellaneous
Caption
  • The item's info window.
  • Small specimen of Muscovite from Brazil.
chemicalcomposition
  • KAl22 or 236
crystalsystem
  • Monoclinic , space group C 2/m
dbkwik:geology/pro...iPageUsesTemplate
Width
  • 500(xsd:integer)
Weight
  • 10(xsd:integer)
streak
  • White
Height
  • 140(xsd:integer)
Color
  • White, grey, silvery
cleavage
  • Perfect on the {001}
diaphaneity
  • Transparent to translucent
Effects
  • none
luster
  • Vitreous, silky, pearly
Source
chemicalclassification
abstract
  • A silicate mineral which has a pearly luster. Symbolizes recovery of motivation.
  • Muscovite (also known as common mica, isinglass, or potash mica) is a 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 laminæ (sheets) which are often highly elastic. Sheets of muscovite 5×3 m have been found in Nellore, India. 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, browns, greens, yellows, or (rarely) 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. 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. The name muscovite comes from Muscovy-glass, a name given to the mineral in Elizabethan England due to its use in medieval Russia as a cheaper alternative to glass in windows. This usage became widely known in England during the sixteenth century with its first mention appearing in letters by George Turberville, the secretary of England's ambassador to the Russian tzar Ivan the Terrible, in 1568.
is accessory mineral(s) of
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