Tenacity
-
-
Solubility
insoluble in water
-
Durability
-
-
Specific Gravity
2.51-2.632.56-2.60
1
7.18
👆🏻
Fracture
Fibrous
Uneven, ConchoidalWalter Schumann
Cleavage
Perfect basal
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Mohs Hardness
2.5-4.56-6.5
2
10
👆🏻
Chemical Composition
Mg 3(Si 2O 5)(OH) 4Gemdat.org , Management Team (2012)
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8