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Oligoclase
Oligoclase

Opal
Opal



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Oligoclase
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Opal

Oligoclase and Opal Physical Properties

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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)
 
BrittleWalter Schumann
hot salt water
-
1.98-2.25
Conchoidal
None
5-6.5
SiO2 · nH2O

Oligoclase and Opal Chemical Formula

While comparing Oligoclase and Opal 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 Opal chemical formula.

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Oligoclase and Opal Specific Gravity

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