Dravite and Augelite Physical Properties

Dravite

Augelite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

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)

2.70-2.75

Conchoidal

From the Greek for luster, for its pearly luster on the cleavage.

4.5-5

Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Dravite and Augelite Chemical Formula

While comparing Dravite and Augelite 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 Augelite chemical formula.

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Dravite and Augelite Specific Gravity

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