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Augelite and Andalusite Physical Properties


Andalusite and Augelite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.70-2.75   
3.05-3.21   

Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)   

Cleavage
From the Greek for luster, for its pearly luster on the cleavage.   
Good on {110}, poor on {100}   

Mohs Hardness
4.5-5   
7.5   

Chemical Composition
Al 2(PO 4)(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)   
Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references   

Optical Properties >>
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Augelite and Andalusite Chemical Formula

While comparing Augelite 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 Augelite and Andalusite chemical formula.

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Augelite and Andalusite Specific Gravity

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

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