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Oligoclase
Oligoclase

Gahnite
Gahnite



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Oligoclase
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Gahnite

Oligoclase and Gahnite 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)
 
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-
-
4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Oligoclase and Gahnite Chemical Formula

While comparing Oligoclase and Gahnite 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 Gahnite chemical formula.

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Oligoclase and Gahnite Specific Gravity

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