Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.80-5.502.6-3.3
1
7.18
👆🏻
Fracture
-
Lamellar
Cleavage
Indistinct
Perfect 001
Mohs Hardness
5-5.52-2.5
2
10
👆🏻
Chemical Composition
(Ce,La,Nd,Th)PO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
(Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6