Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.16-3.435.35
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Conchoidal
Cleavage
{110} Good, {110} Good
Perfect on {100}, imperfect on {001}
Mohs Hardness
5-62.5
2
10
👆🏻
Chemical Composition
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
PbCu(SO 4)(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)