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Andalusite and Thulite Physical Properties


Thulite and Andalusite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.05-3.21   
3.1   

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

Cleavage
Good on {110}, poor on {100}   
Perfect {010} imperfect {100}   

Mohs Hardness
7.5   
6-7   

Chemical Composition
Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references   
Ca2Al3(SiO4)3(OH)   

Optical Properties >>
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Andalusite and Thulite Chemical Formula

While comparing Andalusite and Thulite 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 Thulite chemical formula.

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Andalusite and Thulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Thulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Thulite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 3.1 whereas that of Thulite is 3.1.

Brown Gemstones

Brown Gemstones


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