Tenacity
-
Brittle
Solubility
-
slightly water soluble and in hot hydrochloric acid
Durability
-
-
Specific Gravity
3.46-3.503.00-3.25
1
7.18
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Fracture
Conchoidal
Subconchoidal, Uneven, ConchoidalWalter Schumann
Cleavage
Perfect
Octahedral, perfect on {111}, parting on {011}
Mohs Hardness
6-74
2
10
👆🏻
Chemical Composition
MgAlBO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaF2