Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
-99992.90-3.40
1
7.18
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Fracture
-
Uneven, ConchoidalWalter Schumann
Cleavage
-
Indiscernible
Mohs Hardness
-99997-7.5
2
10
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Chemical Composition
SiO2, Al2O3, CaO, MgO, FeO
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.