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Phlogopite
Phlogopite

Andradite
Andradite



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Phlogopite
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Andradite

Phlogopite and Andradite 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
 
Brittle
-
-
3.70-4.10
Conchoidal, Uneven
none
6.5-7
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Phlogopite and Andradite Chemical Formula

While comparing Phlogopite and Andradite 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 Andradite chemical formula.

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Phlogopite and Andradite Specific Gravity

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