Tenacity
Brittle
Brittle
Solubility
-
slightly water soluble and in hot hydrochloric acid
Durability
-
-
Specific Gravity
2.60-2.903.00-3.25
1
7.18
👆🏻
Fracture
Uneven, Conchoidal, Irregular
Subconchoidal, Uneven, ConchoidalWalter Schumann
Cleavage
Imperfect on {0001}
Octahedral, perfect on {111}, parting on {011}
Mohs Hardness
7.5-84
2
10
👆🏻
Chemical Composition
Be3Al2Si6O18
CaF2