Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.6-3.34.80-5.50
1
7.18
👆🏻
Fracture
Lamellar
-
Cleavage
Perfect 001
Indistinct
Mohs Hardness
2-2.55-5.5
2
10
👆🏻
Chemical Composition
(Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6
(Ce,La,Nd,Th)PO 4Michael OâDonoghue , Gems, Sixth Edition (2006)