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Hackmanite
Hackmanite

Dravite
Dravite



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Hackmanite
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Dravite

Hackmanite and Dravite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.27-2.33
-
Perfect
5.5-6
Na 8Al 6Si 6O 24Cl 2Michael O’Donoghue , Gems, Sixth Edition (2006)
 
-
-
-
3.03-3.18
Uneven, Irregular, Conchoidal
{???} Indistinct
7-7.5
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Hackmanite and Dravite Chemical Formula

While comparing Hackmanite 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 Hackmanite and Dravite chemical formula.

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Hackmanite and Dravite Specific Gravity

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