Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.95-5.03.29-3.33
1
7.18
👆🏻
Fracture
Uneven
Uneven
Cleavage
Imperfect to indistinct on {10 1 0}, parting on {0001}
Perfect
Mohs Hardness
4-55
2
10
👆🏻
Chemical Composition
(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Ca,Ce) 4 Na(Na,Ca) 2 Ti(Si 2 O 7 ) 2 F 2 (O,F) 2 Michael O’Donoghue, Gems, Sixth Edition (2006)