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Ettringite and Verdelite Physical Properties


Verdelite and Ettringite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Partially soluble in water   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
1.77   
2.90-3.40   

Fracture
Not Available   
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
Perfect on {10 1 0}   
Not Available   

Mohs Hardness
2-2.5   
7-7.5   

Chemical Composition
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)   
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.   

Optical Properties >>
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Ettringite and Verdelite Chemical Formula

While comparing Ettringite and Verdelite 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 Ettringite and Verdelite chemical formula.

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Ettringite and Verdelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Verdelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Verdelite Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 2.90-3.40 whereas that of Verdelite is 2.90-3.40.

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