Zoisite and Creedite Physical Properties

Zoisite

Creedite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.20-3.502.70

1 7.18

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Fracture

Uneven, Conchoidal, Even

Uneven, Conchoidal

Cleavage

Perfect {010} imperfect {100}

Perfect on {100}

Mohs Hardness

6-74.5

2 10

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Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

Zoisite and Creedite Chemical Formula

While comparing Zoisite and Creedite 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 Creedite chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.

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Zoisite and Creedite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Creedite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Creedite Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 2.70 whereas that of Creedite is 2.70.