Hematite and Siderite Physical Properties

Hematite

Siderite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.00-5.303.83-3.89

1 7.18

1.5 Fracture

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

Uneven, Conchoidal, UnevenArthur Thomas, Brittle

1.6 Cleavage

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

Perfect on {01 1 1}

1.7 Mohs Hardness

63.5-4.5

2 10

1.8 Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)

Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Hematite and Siderite Chemical Formula

While comparing Hematite and Siderite 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 Siderite chemical formula.

Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)
Chemical formula of Siderite- Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Hematite and Siderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hematite and Siderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hematite and Siderite Optical Properties during the identification of gemstone. Specific gravity of Hematite is 3.83-3.89 whereas that of Siderite is 3.83-3.89.