Anorthit

Structural context

Anorthite
Crystal System triclinicCrystal Class pinacoidalSpace Group P-1

Chemical context

Stoichiometric formulas

Anorthite
mindat.org
  • March 13, 2023Ca(Al2Si2O8)
IMA
  • March 13, 2023Ca(Al2Si2O8)
mineralogy.rocks
  • Aug. 30, 2022CaAl2Si2O8

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • colourless
  • reddish grey
    Color noteOriginal color note from the source
    Colourless, reddish grey, white
    StreakStreak entities, recognized using a custom trained NER model
      Streak noteOriginal streak note from the source
      White
      Lustre
      Vitreous
      Fracture
      Irregular/Uneven
      Conchoidal
      Transparency
      Transparent
      Translucent
      Tenacity
      brittle
      Hardness
      6—6.5
      Measured density
      2.74—2.76
      Calculated density
      2.76