Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
-99996.30-6.39
1
7.18
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Fracture
Sub-Conchoidal, Splintery
Conchoidal
Cleavage
{201} Imperfect, {100} Poor, {001} Poor
[001] good, [210] distinct
Mohs Hardness
3.5-43-3.5
2
10
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Chemical Composition
FeAsO4·2H2O
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references