Povondraite and Powellite Physical Properties

Povondraite

Powellite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.264.23

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)

UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

None

{111} Distinct

1.7 Mohs Hardness

Not Available3.5-4

2 10

1.8 Chemical Composition

NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)

CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Povondraite and Powellite Chemical Formula

While comparing Povondraite and Powellite 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 Povondraite and Powellite chemical formula.

Chemical formula of Povondraite- NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Powellite- CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Brown Gemstones

Povondraite Vs Staurolite

Povondraite Vs Sonolite

Povondraite Vs Smoky Quartz

Povondraite and Powellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Povondraite and Powellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Povondraite and Powellite Optical Properties during the identification of gemstone. Specific gravity of Povondraite is 4.23 whereas that of Powellite is 4.23.