Hematite and Zoisite Physical Properties

Hematite

Zoisite

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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

5.00-5.303.20-3.50

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

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

Perfect {010} imperfect {100}

1.7 Mohs Hardness

66-7

2 10

1.8 Chemical Composition

Fe 2O 3Arthur Thomas , Gemstones (2009)

Ca₂Al₃(SiO₄)₃(OH)

Hematite and Zoisite Chemical Formula

While comparing Hematite and Zoisite 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 Zoisite chemical formula.

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

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Hematite and Zoisite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hematite and Zoisite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hematite and Zoisite Optical Properties during the identification of gemstone. Specific gravity of Hematite is 3.20-3.50 whereas that of Zoisite is 3.20-3.50.