Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
4.95-5.02.72-2.75
1
7.18
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Fracture
Uneven
Uneven
Cleavage
Imperfect to indistinct on {10 1 0}, parting on {0001}
Perfect on [001], good on [010], imperfect on [110]
Mohs Hardness
4-56-6.5
2
10
👆🏻
Chemical Composition
(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)