Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.05-3.214.00-4.65
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Splintery
Uneven, Sub-Conchoidal
Cleavage
Good on {110}, poor on {100}
Perfect on [1011]
Mohs Hardness
7.55-5.5
2
10
👆🏻
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references