Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.16-3.233.32-3.43
1
7.18
👆🏻
Fracture
Conchoidal, Uneven, Conchoidal to uneven
Conchoidal
Cleavage
[0001] indistinct, [1010] indistinct
Poor on {110} and {100} very poor on {001}
Mohs Hardness
56-7
2
10
👆🏻
Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4