Erythrite and Hematite Physical Properties

Erythrite

Hematite

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1 Physical Properties

1.1 Tenacity

Sectile

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.065.00-5.30

1 7.18

1.5 Fracture

Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

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

1.6 Cleavage

Perfect on {010}; poor on {100} and { 1 02}.

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

1.7 Mohs Hardness

Not Available6

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

Fe 2O 3Arthur Thomas , Gemstones (2009)

Erythrite and Hematite Chemical Formula

While comparing Erythrite and Hematite 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 Erythrite and Hematite chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

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Erythrite and Hematite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Hematite Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 5.00-5.30 whereas that of Hematite is 5.00-5.30.