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Andalusite
Andalusite

Natrolite
Natrolite



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Andalusite
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Natrolite

Andalusite and Natrolite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.05-3.21
Uneven, Subconchoidal, Splintery
Good on {110}, poor on {100}
7.5
Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006) More from other references
 
Brittle
-
-
2.20-2.26
Uneven
Perfect on {110}
5-5.5
Na 2[Al 2Si 3O 10] · 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Andalusite and Natrolite Chemical Formula

While comparing Andalusite and Natrolite 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 Natrolite chemical formula.

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Andalusite and Natrolite Specific Gravity

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