Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.16-3.233.355-3.433
1
7.18
👆🏻
Fracture
Conchoidal, Uneven, Conchoidal to uneven
Uneven
Cleavage
[0001] indistinct, [1010] indistinct
{???} Good, {???} Good
Mohs Hardness
5-9999
2
10
👆🏻
Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
(Ca,Mn2+ ,Fe2+ ) 3Al 2BSi 4O 15(OH)Anthony et al , Handbook of mineralogy (2001)