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Oligoclase
Oligoclase

Blue John
Blue John



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Oligoclase
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Blue John

Oligoclase and Blue John Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.62-2.67
Uneven
From the Greek, oligos and kasein, little cleavage.
6-6.5
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)
 
-
-
-
3.00-3.25
-
Perfect
-9999
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Oligoclase and Blue John Chemical Formula

While comparing Oligoclase and Blue John 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 Blue John chemical formula.

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Oligoclase and Blue John Specific Gravity

Another important criteria for qualitative analysis of gemstones is Oligoclase and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Oligoclase Vs Blue John during the identification of gemstone. Specific gravity of Oligoclase is whereas that of Blue John is .