Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.813.90-4.00
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal
Cleavage
{001} Perfect
Perfect on {001}, good on {210}, poor on {010}
Mohs Hardness
4.5-53-3.5
2
10
👆🏻
Chemical Composition
NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references