Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.97-3.034.80-5.50
1
7.18
👆🏻
Fracture
Uneven, ConchoidalWalter Schumann, Conchoidal
-
Cleavage
{001} Poor
Indistinct
Mohs Hardness
75-5.5
2
10
👆🏻
Chemical Composition
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Ce,La,Nd,Th)PO 4Michael OâDonoghue , Gems, Sixth Edition (2006)