Dravite and Scheelite Physical Properties

Dravite

Scheelite

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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

3.03-3.185.9-6.3

1 7.18

1.5 Fracture

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

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Uneven

1.6 Cleavage

{???} Indistinct

On {101}, distinct; on {112}, interrupted; on {001}, indistinct

1.7 Mohs Hardness

7-7.54.5-5

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)

CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Dravite and Scheelite Chemical Formula

While comparing Dravite and Scheelite 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 Scheelite 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 Scheelite- CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Dravite and Scheelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Scheelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Scheelite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 5.9-6.3 whereas that of Scheelite is 5.9-6.3.