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Shigaite and Andalusite Physical Properties


Andalusite and Shigaite Physical Properties


Physical Properties

Tenacity
Moderately flexible   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.32   
3.05-3.21   

Fracture
Flexible Flexible fragments.   
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)   

Cleavage
Perfect on {0001}   
Good on {110}, poor on {100}   

Mohs Hardness
2   
7.5   

Chemical Composition
Not Available   
Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references   

Optical Properties >>
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Shigaite and Andalusite Chemical Formula

While comparing Shigaite and Andalusite 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 Shigaite and Andalusite chemical formula.

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Shigaite and Andalusite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Shigaite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Shigaite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Shigaite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.

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