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Allanite
Allanite

Gypsum
Gypsum



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Allanite
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Gypsum

Allanite and Gypsum Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.40-4.20
-
Indistinct
-9999
Ca(Ce,La,Y,Ca)Al2(Fe,Al)Si3O12(OH)
 
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)

Allanite and Gypsum Chemical Formula

While comparing Allanite 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 Allanite and Gypsum chemical formula.

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Allanite and Gypsum Specific Gravity

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