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Dravite and Pyrophyllite Physical Properties


Pyrophyllite and Dravite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.03-3.18   
2.65-2.90   

Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle   
Gemstones (2009), Flexible Flexible fragments.   

Cleavage
{???} Indistinct   
{001} Perfect   

Mohs Hardness
7-7.5   
Not Available   

Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)   
Al 2Si 4O 10(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Dravite and Pyrophyllite Chemical Formula

While comparing Dravite and Pyrophyllite 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 Dravite and Pyrophyllite chemical formula.

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Dravite and Pyrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.

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