1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.90-4.002.62-2.65
1
7.18
1.5 Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Gemstones of the world (2001)
1.6 Cleavage
Perfect on {001}, good on {210}, poor on {010}
001
1.7 Mohs Hardness
1.8 Chemical Composition
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8