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Gahnite
Gahnite

Gypsum
Gypsum



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Gahnite
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Gypsum

Gahnite and Gypsum Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
4.00-4.62
Conchoidal, Uneven
Indistinct parting on [111]
7.5-8
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)
 
Flexible
Soluble
-
2.20-2.40
Conchoidal, Splintery, Fibrous
Perfect on {010}, distinct on {100}
2
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

Gahnite and Gypsum Chemical Formula

While comparing Gahnite and Gypsum 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 Gahnite and Gypsum chemical formula.

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Gahnite and Gypsum Specific Gravity

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