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Andalusite
Andalusite

Povondraite
Povondraite



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Andalusite
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Povondraite

Andalusite and Povondraite 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
 
-
-
-
3.26
Uneven
None
-9999
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)

Andalusite and Povondraite Chemical Formula

While comparing Andalusite and Povondraite 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 Povondraite chemical formula.

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Andalusite and Povondraite Specific Gravity

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