Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
6.30-6.392.70-2.75
1
7.18
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Fracture
Conchoidal
Conchoidal
Cleavage
[001] good, [210] distinct
From the Greek for luster, for its pearly luster on the cleavage.
Mohs Hardness
3-3.54.5-5
2
10
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Chemical Composition
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)