Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.79-3.942.56-2.60
1
7.18
👆🏻
Fracture
Lamellar, Splintery
Uneven, ConchoidalWalter Schumann
Cleavage
{100} Good, {001} Good, {010} Poor
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Mohs Hardness
46-6.5
2
10
👆🏻
Chemical Composition
FeAs
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8