Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
3.95-4.102.95-2.96
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
{110} Perfect, {110} Perfect, {110} Perfect
None
Mohs Hardness
3.5-47-7.5
2
10
👆🏻
Chemical Composition
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references