Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.43-3.446.30-6.39
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
None Observed
[001] good, [210] distinct
Mohs Hardness
6.5-73-3.5
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references