Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.813.16-3.23
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal, Uneven, Conchoidal to uneven
Cleavage
{001} Perfect
[0001] indistinct, [1010] indistinct
Mohs Hardness
4.5-55
2
10
👆🏻
Chemical Composition
NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references