Hematite and Realgar Physical Properties

Hematite

Realgar

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.00-5.303.56

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

(e.g. graphite).

1.6 Cleavage

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

{010} Good

1.7 Mohs Hardness

6Not Available

2 10

1.8 Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)

AsSMichael OâDonoghue , Gems, Sixth Edition (2006)

Hematite and Realgar Chemical Formula

While comparing Hematite and Realgar 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 Realgar chemical formula.

Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)

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Hematite and Realgar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hematite and Realgar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hematite and Realgar Optical Properties during the identification of gemstone. Specific gravity of Hematite is 3.56 whereas that of Realgar is 3.56.