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Powellite
Powellite

Dravite
Dravite



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Dravite

Powellite and Dravite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
4.233.03-3.18
Amber
1 7.18
1.5 Fracture
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
1.6 Cleavage
{111} Distinct
{???} Indistinct
1.7 Mohs Hardness
3.5-47-7.5
Amber
2 10
1.8 Chemical Composition
CaMoO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Powellite and Dravite Chemical Formula

While comparing Powellite 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 Powellite and Dravite chemical formula.

  • Chemical formula of Powellite- CaMoO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Powellite and Dravite Specific Gravity

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