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Rubellite and Apatite Physical Properties


Apatite and Rubellite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.01-3.06   
3.16-3.23   

Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven   

Cleavage
Not Available   
[0001] indistinct, [1010] indistinct   

Mohs Hardness
7-7.5   
5   

Chemical Composition
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.   
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references   

Optical Properties >>
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Rubellite and Apatite Chemical Formula

While comparing Rubellite and Apatite 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 Rubellite and Apatite chemical formula.

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Rubellite and Apatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Apatite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 3.16-3.23 whereas that of Apatite is 3.16-3.23.

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