Oligoclase and Spinel Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
none
Durability
Not Available
Not Available
Specific Gravity
2.62-2.67
3.64-3.66
Fracture
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
From the Greek, oligos and kasein, little cleavage.
None, but may exhibit slight parting
Chemical Composition
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
MgAl2O4
Oligoclase and Spinel Chemical Formula
While comparing Oligoclase and Spinel physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Oligoclase and Spinel chemical formula.
- Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Spinel- MgAl2O4
Oligoclase and Spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Oligoclase and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Oligoclase and Spinel Optical Properties during the identification of gemstone. Specific gravity of Oligoclase is 3.64-3.66 whereas that of Spinel is 3.64-3.66.