Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.65-4.552.90-3.40
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, ConchoidalWalter Schumann
Cleavage
None, but may exhibit slight parting
Indiscernible
Mohs Hardness
7.5-87-7.5
2
10
👆🏻
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
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.