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Phlogopite
Phlogopite

Herderite
Herderite



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Phlogopite
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Herderite

Phlogopite and Herderite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Tough
-
-
2.78-2.85
Uneven
Perfect basal (001)
2-2.5
KMg3(Si3Al)O10(F,OH)2
 
-
-
-
2.90-3.02
Subconchoidal, Conchoidal
Indistinct on {110}
5-5.5
CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Phlogopite and Herderite Chemical Formula

While comparing Phlogopite 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 Phlogopite and Herderite chemical formula.

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Phlogopite and Herderite Specific Gravity

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