Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.95-4.103.04-3.26
1
7.18
👆🏻
Fracture
Uneven
Splintery, Uneven
Cleavage
{110} Perfect, {110} Perfect, {110} Perfect
{110} perfect
Mohs Hardness
3.5-45-6
2
10
👆🏻
Chemical Composition
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)