Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.90-3.102.72
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
-
Cleavage
Poor/indistinct on {1120} and {1011}
{110} Perfect, {010} Perfect
Mohs Hardness
75-6
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
Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)