Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.90-3.104.95-5.0
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Uneven
Cleavage
Poor/indistinct on {1120} and {1011}
Imperfect to indistinct on {10 1 0}, parting on {0001}
Mohs Hardness
74-5
2
10
👆🏻
Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references