Hematite and Anhydrite Physical Properties

Hematite

Anhydrite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

5.00-5.302.90-2.98

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann, Conchoidal

Conchoidal

Cleavage

None, may show partings on {0001} and {10 1 1}

Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.

Mohs Hardness

63.5

2 10

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Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)

CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Hematite and Anhydrite Chemical Formula

While comparing Hematite and Anhydrite 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 Anhydrite chemical formula.

Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Hematite and Anhydrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hematite and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hematite and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Hematite is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.