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Andalusite and Pectolite Physical Properties


Pectolite and Andalusite Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.05-3.21   
2.74-2.90   

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

Cleavage
Good on {110}, poor on {100}   
Perfect on {100} and {001}   

Mohs Hardness
7.5   
4.5-5   

Chemical Composition
Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references   
Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.   

Optical Properties >>
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Andalusite and Pectolite Chemical Formula

While comparing Andalusite and Pectolite 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 Pectolite chemical formula.

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Andalusite and Pectolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Pectolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Pectolite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 2.74-2.90 whereas that of Pectolite is 2.74-2.90.

Brown Gemstones

Brown Gemstones


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