1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.62-2.653.82-3.97
1
7.18
1.5 Fracture
Gemstones of the world (2001)
Subconchoidal, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
001
Perfect on [001] and [011]
1.7 Mohs Hardness
1.8 Chemical Composition
Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references