Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.32-3.432.56-2.60
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, ConchoidalWalter Schumann
Cleavage
Poor on {110} and {100} very poor on {001}
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Mohs Hardness
6-76-6.5
2
10
👆🏻
Chemical Composition
Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8