Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.25-2.404.95-5.0
1
7.18
👆🏻
Fracture
-
Uneven
Cleavage
perfect on {010}; good on {100}
Imperfect to indistinct on {10 1 0}, parting on {0001}
Mohs Hardness
5-5.54-5
2
10
👆🏻
Chemical Composition
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references