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Andalusite
Andalusite

Nuummite
Nuummite



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Andalusite
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Nuummite

Andalusite and Nuummite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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-
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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
 
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3.18-3.37
Conchoidal
Perfect on 210
5.5-6
Na(Fe,Mg)7(AlSi7O22)(OH)2

Andalusite and Nuummite Chemical Formula

While comparing Andalusite and Nuummite 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 Nuummite chemical formula.

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Andalusite and Nuummite Specific Gravity

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