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Goethite
Goethite

Anhydrite
Anhydrite



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Goethite
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Anhydrite

Goethite and Anhydrite 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)
 
Brittle
-
-
2.90-2.98
Conchoidal
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
3.5
CaSO 4Michael O’Donoghue , Gems, Sixth edition (2006) More from other references

Goethite and Anhydrite Chemical Formula

While comparing Goethite and Anhydrite 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 Anhydrite chemical formula.

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Goethite and Anhydrite Specific Gravity

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