Colomit

Structural context

Roscoelite
Crystal System monoclinicCrystal Class prismaticSpace Group C2/m

Chemical context

Stoichiometric formulas

Roscoelite
mindat.org
  • March 7, 2025KV3+2(AlSi3O10)(OH)2
  • March 13, 2023K(V3+,Al)2(AlSi3O10)(OH)2
IMA
  • March 13, 2023KV3+2(Si3Al)O10(OH)2
mineralogy.rocks
  • Aug. 30, 2022KV3+2(Si3Al)O10(OH)2

Physical properties

ColorColor entities, recognized using a custom trained NER model
    • dark green
      Color noteOriginal color note from the source
      Brown, dark green to black
      StreakStreak entities, recognized using a custom trained NER model
      • gray
      Streak noteOriginal streak note from the source
      Gray
      Lustre
      Pearly
      Transparency
      Transparent
      Translucent
      Hardness
      2.5
      Measured density
      2.92—2.94
      Calculated density
      2.89