Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.00-3.154.95-5.0
1
7.18
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Fracture
-
Uneven
Cleavage
Indistinct
Imperfect to indistinct on {10 1 0}, parting on {0001}
Mohs Hardness
5-5.54-5
2
10
👆🏻
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)
(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references