Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.2-2.62.56-2.60
1
7.18
👆🏻
Fracture
Uneven
Uneven, ConchoidalWalter Schumann
Cleavage
None
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Mohs Hardness
3-46-6.5
2
10
👆🏻
Chemical Composition
(Fe+++,Al)25(PO4)17O6(OH)12•75(H2O)
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8