Tenacity
-
Tough
Solubility
-
-
Durability
-
-
Specific Gravity
2.62-2.653.20-3.26
1
7.18
👆🏻
Fracture
-
Splintery
Cleavage
001
{010} perfect
Mohs Hardness
66-7.5
2
10
👆🏻
Chemical Composition
Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)