Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.40-3.586.30-6.39
1
7.18
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Fracture
Conchoidal, Uneven
Conchoidal
Cleavage
{010} Perfect
[001] good, [210] distinct
Mohs Hardness
7.53-3.5
2
10
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Chemical Composition
(Al,Mg) 8(Al,Si) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references