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Andalusite and Nosean Physical Properties


Nosean 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   
2.30-2.40   

Fracture
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)   
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle   

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

Mohs Hardness
7.5   
Not Available   

Chemical Composition
Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references   
Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)   

Optical Properties >>
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Andalusite and Nosean Chemical Formula

While comparing Andalusite and Nosean 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 Nosean chemical formula.

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Andalusite and Nosean Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Nosean Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Nosean Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 2.30-2.40 whereas that of Nosean is 2.30-2.40.

Brown Gemstones

Brown Gemstones


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