Anhidrit

Structural context

Anhydrite
Crystal System orthorhombicSpace Group Cmcm

Chemical context

Stoichiometric formulas

Anhydrite
mindat.org
  • March 13, 2023CaSO4
IMA
  • March 13, 2023Ca(SO4)
mineralogy.rocks
  • Aug. 30, 2022CaS6+O4

Physical properties

ColorColor entities, recognized using a custom trained NER model
  • colourless
  • colourless
  • bluish
  • blue-grey
  • dark grey
    • burgundy-red
    • reddish
      • rose-pink
      • brownish
      Color noteOriginal color note from the source
      Colourless, bluish, blue-grey, violet, burgundy-red, white, rose-pink, brownish, reddish, grey, dark grey; colourless in transmitted light
      StreakStreak entities, recognized using a custom trained NER model
        • greyish
        Streak noteOriginal streak note from the source
        White, off-white, greyish
        Lustre
        Vitreous
        Greasy
        Pearly
        Fracture
        Irregular/Uneven
        Splintery
        Transparency
        Transparent
        Translucent
        Tenacity
        brittle
        Hardness
        3—3.5
        Calculated density
        2.95