Tenacity
-
Brittle
Solubility
-
Dilute acid
Durability
-
-
Specific Gravity
2.812.93-2.96
1
7.18
👆🏻
Fracture
Conchoidal
Subconchoidal, Conchoidal
Cleavage
{001} Perfect
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
4.5-53.5-4
2
10
👆🏻
Chemical Composition
NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references