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Pyrophyllite
Pyrophyllite

Anhydrite
Anhydrite



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Pyrophyllite
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Anhydrite

Pyrophyllite and Anhydrite Physical Properties

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
 
Brittle
-
-
2.90-2.98
Conchoidal
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
3.5
CaSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references

Pyrophyllite and Anhydrite Chemical Formula

While comparing Pyrophyllite and Anhydrite 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 Anhydrite chemical formula.

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Pyrophyllite and Anhydrite Specific Gravity

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