Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.16-3.232.33-2.37
1
7.18
👆🏻
Fracture
Conchoidal, Uneven, Conchoidal to uneven
ConchoidalWalter Schumann
Cleavage
[0001] indistinct, [1010] indistinct
Perfect on {010}, good on {100}
Mohs Hardness
57.5
2
10
👆🏻
Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Be 2BO 3(OH)Ulrich Henn and Claudio C.