Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.33-2.373.69-3.81
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Uneven, Conchoidal to uneven, ConchoidalWalter Schumann
Cleavage
Perfect on {010}, good on {100}
Distinct on {110}, imperfect on {010}, poor on {001}
Mohs Hardness
7.58.5
2
10
👆🏻
Chemical Composition
Be 2BO 3(OH)Ulrich Henn and Claudio C.
BeAl 2 O 4