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Andalusite
Andalusite

Richterite
Richterite



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Andalusite
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Richterite

Andalusite and Richterite 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
 
-
-
-
3.0-3.5
Uneven
Perfect
5-6
Na(CaNa)(Mg,Fe++)5(Si8O22)(OH)2

Andalusite and Richterite Chemical Formula

While comparing Andalusite and Richterite 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 Richterite chemical formula.

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Andalusite and Richterite Specific Gravity

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