Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.16-3.232.74-2.90
1
7.18
👆🏻
Fracture
Conchoidal, Uneven, Conchoidal to uneven
Uneven, Splintery
Cleavage
[0001] indistinct, [1010] indistinct
Perfect on {100} and {001}
Mohs Hardness
54.5-5
2
10
👆🏻
Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.