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Pyrophyllite
Pyrophyllite

Opal
Opal



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Pyrophyllite
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Opal

Pyrophyllite and Opal Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.65-2.90
-
{001} Perfect
-9999
Al 2Si 4O 10(OH) 2Michael 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

Pyrophyllite and Opal Chemical Formula

While comparing Pyrophyllite 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 Pyrophyllite and Opal chemical formula.

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Pyrophyllite and Opal Specific Gravity

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