Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.56-2.602.90-3.02
1
7.18
👆🏻
Fracture
Uneven, ConchoidalWalter Schumann
Subconchoidal, Conchoidal
Cleavage
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Indistinct on {110}
Mohs Hardness
6-6.55-5.5
2
10
👆🏻
Chemical Composition
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
CaBePO 4(F,OH)Ulrich Henn and Claudio C.