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Goethite
Goethite

Phlogopite
Phlogopite



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Goethite
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Phlogopite

Goethite and Phlogopite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
HCl soluble
-
4.27-4.29
Uneven
Perfect {010}
5-5.5
FeO(OH)Arthur Thomas , Gemstones (2009)
 
Tough
-
-
2.78-2.85
Uneven
Perfect basal (001)
2-2.5
KMg3(Si3Al)O10(F,OH)2

Goethite and Phlogopite Chemical Formula

While comparing Goethite and Phlogopite 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 Goethite and Phlogopite chemical formula.

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Goethite and Phlogopite Specific Gravity

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