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The Encylopedia of gems in English is still under construction. Thanks to visit the encyclopedia of gems in French.

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Bytownite

Bytownite
  • Translations : Bytownit, Bytowniet, Bytownite, Bytownita, Bytownita, Битовнит, 培长石.
  • Etymology : From Bytown, the former name of Ottawa - Ontario - Canada
  • Discovery: 1831 by Thomson
  • Comment : The Bytownite is a variety of anorthite from Feldspar family.

The Bytownite is a variety of anorthite from Feldspar family.

Transparent crystals of Bytownite are very rare, making it a very popular collection stone.

To learn more about the mineralogy of the bytownite, see Mindat.org.

See the bytownite for sale.

Gemological data

  • Chemical formula : (Ca,Na)[Al(Al,Si)Si2O8]
  • Hardness (Mohs) : 6 - 6.5
  • Density : 2.5 - 2.8
  • Refractive index : nα = 1.563 - 1.572 nβ = 1.568 - 1.578 nγ = 1.573 - 1.583
  • Crystal system : Triclinic
  • Group : Feldspaths
  • Mineralogical Class : Silicates

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