Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.95-4.102.78
1
7.18
👆🏻
Fracture
Uneven
Uneven, Conchoidal
Cleavage
{110} Perfect, {110} Perfect, {110} Perfect
{???} Distinct, {???} Indistinct
Mohs Hardness
3.5-45-6
2
10
👆🏻
Chemical Composition
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
3CaAl 2Si 2O 8 · CaCO 3Anthony et al , Handbook of mineralogy (2001)