Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.53-3.652.56-2.60
1
7.18
👆🏻
Fracture
Splintery
Uneven, ConchoidalWalter Schumann
Cleavage
[100] perfect [010] imperfect with 79° angle between
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Mohs Hardness
4-76-6.5
2
10
👆🏻
Chemical Composition
Al2SiO5
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8