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Iolite
Iolite

Oligoclase
Oligoclase



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Iolite
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Oligoclase

Iolite and Oligoclase Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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-
-
2.6-2.7
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3,1
7-7.5
Mg2Al4Si5O18
 
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-
-
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)

Iolite and Oligoclase Chemical Formula

While comparing Iolite 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 Iolite and Oligoclase chemical formula.

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Iolite and Oligoclase Specific Gravity

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