Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.98-3.032.90-3.40
1
7.18
👆🏻
Fracture
Uneven
Uneven, ConchoidalWalter Schumann
Cleavage
[110] perfect; [010] distinct
Indiscernible
Mohs Hardness
5-67-7.5
2
10
👆🏻
Chemical Composition
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
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.