Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.95-5.02.60-2.64
1
7.18
👆🏻
Fracture
Uneven
Uneven, Splintery, Conchoidal
Cleavage
Imperfect to indistinct on {10 1 0}, parting on {0001}
Absent
Mohs Hardness
4-56.5-7
2
10
👆🏻
Chemical Composition
(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO 2Arthur Thomas , Gemstones (2009)