Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.824.80-5.50
1
7.18
👆🏻
Fracture
-
-
Cleavage
Perfect in one direction, indistinct in one direction
Indistinct
Mohs Hardness
65-5.5
2
10
👆🏻
Chemical Composition
K2Na(Ca,Mn)2Ti[O|Si7O18(OH)]
(Ce,La,Nd,Th)PO 4Michael OâDonoghue , Gems, Sixth Edition (2006)