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Orthoclase
Orthoclase

Opal
Opal



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Orthoclase
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Opal

Orthoclase and Opal Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.54-2.61
Uneven
Has perfect cleavage on {001} and good cleavage on {010}. Cleavages intersect at 90°.
6
KAlSi 3O 8Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
BrittleWalter Schumann
hot salt water
-
1.98-2.25
Conchoidal
None
5-6.5
SiO2 · nH2O

Orthoclase and Opal Chemical Formula

While comparing Orthoclase 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 Orthoclase and Opal chemical formula.

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Orthoclase and Opal Specific Gravity

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