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Achroite
Achroite

Dallasite
Dallasite



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Achroite
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Dallasite

Achroite and Dallasite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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2.90-3.40
Uneven, ConchoidalWalter Schumann
Indiscernible
7-7.5
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
 
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2.58-2.91
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6.5-7
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Achroite and Dallasite Chemical Formula

While comparing Achroite and Dallasite 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 Achroite and Dallasite chemical formula.

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Achroite and Dallasite Specific Gravity

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