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Andalusite
Andalusite

Selenite
Selenite



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Andalusite
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Selenite

Andalusite and Selenite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.05-3.21
Uneven, Subconchoidal, Splintery
Good on {110}, poor on {100}
7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references
 
-
-
-
-9999
-
Perfect
2
CaSO4·2H2O

Andalusite and Selenite Chemical Formula

While comparing Andalusite and Selenite 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 Andalusite and Selenite chemical formula.

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Andalusite and Selenite Specific Gravity

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