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Holmquistite and Dravite Physical Properties


Dravite and Holmquistite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.95-3.13   
3.03-3.18   

Fracture
Not Available   
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle   

Cleavage
{210} Perfect   
{???} Indistinct   

Mohs Hardness
5-6   
7-7.5   

Chemical Composition
Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)   
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)   

Optical Properties >>
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Holmquistite and Dravite Chemical Formula

While comparing Holmquistite and Dravite 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 Holmquistite and Dravite chemical formula.

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Holmquistite and Dravite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Holmquistite and Dravite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Holmquistite and Dravite Optical Properties during the identification of gemstone. Specific gravity of Holmquistite is 3.03-3.18 whereas that of Dravite is 3.03-3.18.

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