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Pyrophyllite
Pyrophyllite

Herderite
Herderite



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Pyrophyllite
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Herderite

Pyrophyllite and Herderite 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
 
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-
-
2.90-3.02
Subconchoidal, Conchoidal
Indistinct on {110}
5-5.5
CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Pyrophyllite and Herderite Chemical Formula

While comparing Pyrophyllite and Herderite 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 Herderite chemical formula.

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Pyrophyllite and Herderite Specific Gravity

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