1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Gemstones of the world (2001)
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
001
Perfect [001] good [010] poor [110]
1.7 Mohs Hardness
1.8 Chemical Composition
Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)