Mineral - Hydroxylapatite
Hydroxylapatite
Chemical Properties
Mineral Class
Phosphates
Toxicity
none
Formula
Ca₅[OH|(PO₄)₃]
Unit Cell
Physical Properties
Hardness
5
Streak
white
Density
Normal (2-3,5)
Cleavage
Fracture
Tenacity
Optical Properties
Color
whiteblackbrownyellowgreen
Birefringence
Luster
Vitreous,
Greasy
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
hexagonal
Point Group
Space Group
Habit
prismatic, grape-shaped
Formation
hydrothermal, Metamorphose
Paragenesis
Twinning
Rarity
Rarely
Synonyms
Hydroxylapatite