Periclase and Oligoclase Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.7-3.9
2.62-2.67
Fracture
Conchoidal, Brittle
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven
Cleavage
{001} perfect; {111} imperfect, may exhibit parting on , {011}
From the Greek, oligos and kasein, little cleavage.
Mohs Hardness
5.5-6
6-6.5
Chemical Composition
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Periclase and Oligoclase Chemical Formula
While comparing Periclase and Oligoclase 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 Periclase and Oligoclase chemical formula.
- Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Periclase and Oligoclase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Periclase and Oligoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Periclase and Oligoclase Optical Properties during the identification of gemstone. Specific gravity of Periclase is 2.62-2.67 whereas that of Oligoclase is 2.62-2.67.