Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.33-2.372.56-2.60
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Uneven, ConchoidalWalter Schumann
Cleavage
Perfect on {010}, good on {100}
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Mohs Hardness
7.56-6.5
2
10
👆🏻
Chemical Composition
Be 2BO 3(OH)Ulrich Henn and Claudio C.
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8