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Chalcedony
Chalcedony

Oligoclase
Oligoclase



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Chalcedony
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Oligoclase

Chalcedony and Oligoclase Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
Soluble
-
2.55-2.70
Uneven, Splintery, Conchoidal
Absent
6.5-7
SiO2
 
-
-
-
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)

Chalcedony and Oligoclase Chemical Formula

While comparing Chalcedony 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 Chalcedony and Oligoclase chemical formula.

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Chalcedony and Oligoclase Specific Gravity

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