Dravite and Albite Physical Properties

Dravite

Albite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.03-3.182.60-2.65

1 7.18

1.5 Fracture

Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal

1.6 Cleavage

{???} Indistinct

Perfect on {001}, very good on {010}, imperfect on {110}

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Dravite and Albite Chemical Formula

While comparing Dravite and Albite 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 Albite chemical formula.

Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Dravite and Albite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Albite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Albite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 2.60-2.65 whereas that of Albite is 2.60-2.65.