Tenacity
Slightly sectile
-
Solubility
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
-
Durability
-
-
Specific Gravity
22.56-2.60
1
7.18
👆🏻
Fracture
Uneven
Uneven, ConchoidalWalter Schumann
Cleavage
Prismatic {10 1 0}, perfect
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Mohs Hardness
2-2.56-6.5
2
10
👆🏻
Chemical Composition
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8