Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.813.95-4.10
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
{001} Perfect
{110} Perfect, {110} Perfect, {110} Perfect
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
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references