Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.04-3.263.95-4.10
1
7.18
👆🏻
Fracture
Splintery, Uneven
Uneven
Cleavage
{110} perfect
{110} Perfect, {110} Perfect, {110} Perfect
Mohs Hardness
5-63.5-4
2
10
👆🏻
Chemical Composition
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references