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Hematite
Hematite

Powellite
Powellite



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Hematite
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Powellite

Hematite and Powellite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
5.00-5.30
Uneven, ConchoidalWalter Schumann, Conchoidal
None, may show partings on {0001} and {10 1 1}
6
Fe 2O 3Arthur Thomas , Gemstones (2009)
 
-
-
-
4.23
Conchoidal
{111} Distinct
3.5-4
CaMoO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Hematite and Powellite Chemical Formula

While comparing Hematite 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 Hematite and Powellite chemical formula.

  • Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
  • Chemical formula of Powellite- CaMoO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Hematite and Powellite Specific Gravity

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