Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.80-5.502.54-2.78
1
7.18
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Fracture
-
Conchoidal
Cleavage
Indistinct
Good in three directions
Mohs Hardness
5-5.55-6
2
10
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Chemical Composition
(Ce,La,Nd,Th)PO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references