Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
2.813.25-3.35
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal, ConchoidalWalter Schumann
Cleavage
{001} Perfect
Perfect in three directions
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
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references