Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
6.30-6.393.76-3.77
1
7.18
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Fracture
Conchoidal
-
Cleavage
[001] good, [210] distinct
{110} Perfect, {110} Perfect
Mohs Hardness
3-3.55-6
2
10
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Chemical Composition
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.