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Hematite
Hematite

Aragonite
Aragonite



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Hematite
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Aragonite

Hematite and Aragonite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
Dilute acid

Durability

-
-

Specific Gravity

5.00-5.302.93-2.96
1 7.18
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Fracture

Uneven, ConchoidalWalter Schumann, Conchoidal
Subconchoidal, Conchoidal

Cleavage

None, may show partings on {0001} and {10 1 1}
Distinct on {010}, imperfect {110} and {011}

Mohs Hardness

63.5-4
2 10
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Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)
CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Hematite and Aragonite Chemical Formula

While comparing Hematite and Aragonite 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 Aragonite chemical formula.

  • Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
  • Chemical formula of Aragonite- CaCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Hematite and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hematite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hematite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Hematite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.