Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.812.58-2.74
1
7.18
👆🏻
Fracture
Conchoidal
ConchoidalWalter Schumann, Splintery
Cleavage
{001} Perfect
{100} Distinct, {110} Distinct
Mohs Hardness
4.5-55.5-6
2
10
👆🏻
Chemical Composition
NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references