Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
4.80-5.503.69-3.81
1
7.18
👆🏻
Fracture
-
Uneven, Conchoidal to uneven, ConchoidalWalter Schumann
Cleavage
Indistinct
Distinct on {110}, imperfect on {010}, poor on {001}
Mohs Hardness
5-5.58.5
2
10
👆🏻
Chemical Composition
(Ce,La,Nd,Th)PO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
BeAl 2 O 4