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Goethite
Goethite

Feldspar
Feldspar



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Goethite
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Feldspar

Goethite and Feldspar Physical Properties

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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)
 
-
-
-
2.56-2.75
Uneven, Conchoidal
two or three
6-6.5
KAlSi3O8

Goethite and Feldspar Chemical Formula

While comparing Goethite and Feldspar 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 Feldspar chemical formula.

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Goethite and Feldspar Specific Gravity

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