Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.40-4.206.30-6.39
1
7.18
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Fracture
-
Conchoidal
Cleavage
Indistinct
[001] good, [210] distinct
Mohs Hardness
-99993-3.5
2
10
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Chemical Composition
Ca(Ce,La,Y,Ca)Al2(Fe,Al)Si3O12(OH)
PbSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references