1 Physical Properties
1.1 Tenacity
1.2 Solubility
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.4 Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Splintery, Conchoidal, Brittle
1.5 Cleavage
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
{001}, perfect
1.6 Mohs Hardness
1.12 Chemical Composition
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
Not Available