Hydroxylapatit

Structural context

Hydroxylapatite
Crystal System hexagonalCrystal Class hexagonal dipyramidalSpace Group P63/m

Chemical context

Stoichiometric formulas

Hydroxylapatit
mindat.org
  • March 13, 2023Ca5(PO4)3(OH)
Hydroxylapatite
mindat.org
  • March 13, 2023Ca5(PO4)3(OH)
IMA
  • March 13, 2023Ca5(PO4)3OH
mineralogy.rocks
  • Aug. 30, 2022Ca5(P5+O4)3OH

Physical properties

ColorColor entities, recognized using a custom trained NER model
                  Color noteOriginal color note from the source
                  White, grey, yellow, green, violet, purple, red or brown
                  StreakStreak entities, recognized using a custom trained NER model
                    Streak noteOriginal streak note from the source
                    White
                    Lustre
                    Sub-Vitreous
                    Resinous
                    Waxy
                    Greasy
                    Earthy
                    Fracture
                    Conchoidal
                    Sub-Conchoidal
                    Fibrous
                    Transparency
                    Transparent
                    Translucent
                    Opaque
                    Tenacity
                    brittle
                    Hardness
                    5
                    Measured density
                    3.1—3.21
                    Calculated density
                    3.16