Zoisite and Hematite Physical Properties

Zoisite

Hematite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.20-3.505.00-5.30

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Even

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

1.6 Cleavage

Perfect {010} imperfect {100}

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

1.7 Mohs Hardness

6-76

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Fe 2O 3Arthur Thomas , Gemstones (2009)

Zoisite and Hematite Chemical Formula

While comparing Zoisite 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 Zoisite and Hematite chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

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Zoisite and Hematite Specific Gravity

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