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Phenakite
Phenakite

Goethite
Goethite



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Phenakite
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Goethite

Phenakite and Goethite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
2.90-2.98
Conchoidal, ConchoidalWalter Schumann
Distinct on {11 2 0}, imperfect on {10 1 1}
7.5-8
Be 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
-
HCl soluble
-
4.27-4.29
Uneven
Perfect {010}
5-5.5
FeO(OH)Arthur Thomas , Gemstones (2009)

Phenakite and Goethite Chemical Formula

While comparing Phenakite and Goethite 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 Phenakite and Goethite chemical formula.

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Phenakite and Goethite Specific Gravity

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