Tenacity
-
-
Solubility
-
insoluble in water
Durability
-
-
Specific Gravity
2.56-2.602.51-2.63
1
7.18
👆🏻
Fracture
Uneven, ConchoidalWalter Schumann
Fibrous
Cleavage
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Perfect basal
Mohs Hardness
6-6.52.5-4.5
2
10
👆🏻
Chemical Composition
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
Mg 3(Si 2O 5)(OH) 4Gemdat.org , Management Team (2012)