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Goethite
Goethite

Apophyllite
Apophyllite



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Goethite
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Apophyllite

Goethite and Apophyllite 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)
 
-
-
-
2.30-2.50
Uneven
Perfect on (001)
4.5-5
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

Goethite and Apophyllite Chemical Formula

While comparing Goethite and Apophyllite 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 Apophyllite chemical formula.

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Goethite and Apophyllite Specific Gravity

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