Hibonit

Structural context

Hibonite
Crystal System hexagonalCrystal Class dihexagonal dipyramidalSpace Group P63/mmc

Chemical context

Stoichiometric formulas

Hibonite
mindat.org
  • March 13, 2023CaAl12O19Ca may be replaced by minor Ce, Al by minor Ti and Mg.
IMA
  • March 13, 2023CaAl12O19
mineralogy.rocks
  • Aug. 30, 2022CaAl12O19

Physical properties

ColorColor entities, recognized using a custom trained NER model
      Color noteOriginal color note from the source
      Black to brownisk black , purple
      StreakStreak entities, recognized using a custom trained NER model
        Streak noteOriginal streak note from the source
        Brown
        Lustre
        Vitreous
        Fracture
        Sub-Conchoidal
        Transparency
        Translucent
        Hardness
        7.5—8
        Measured density
        3.83—3.85
        Calculated density
        4.09