Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.843.69-3.81
1
7.18
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Fracture
Subconchoidal, Conchoidal
Uneven, Conchoidal to uneven, ConchoidalWalter Schumann
Cleavage
{0001} good, {10 1 0} parting
Distinct on {110}, imperfect on {010}, poor on {001}
Mohs Hardness
7.5-88.5
2
10
👆🏻
Chemical Composition
(Ca,Ce)(Al,Ti,Mg)12O19
BeAl 2 O 4