Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.25-3.502.56-2.60
1
7.18
👆🏻
Fracture
Uneven
Uneven, ConchoidalWalter Schumann
Cleavage
Distinct
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Mohs Hardness
-99996-6.5
2
10
👆🏻
Chemical Composition
Ca 10Mg 2Al 4(SiO 4) 5(Si 2O 7) 2(OH) 4Ulrich Henn and Claudio C.
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8