Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
6.30-6.392.54-2.78
1
7.18
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Fracture
Conchoidal
Conchoidal
Cleavage
[001] good, [210] distinct
Good in three directions
Mohs Hardness
3-3.55-6
2
10
👆🏻
Chemical Composition
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references