Zoisite and Powellite Physical Properties

Zoisite

Powellite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.20-3.504.23

1 7.18

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Fracture

Uneven, Conchoidal, Even

Conchoidal

Cleavage

Perfect {010} imperfect {100}

{111} Distinct

Mohs Hardness

6-73.5-4

2 10

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Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Zoisite and Powellite Chemical Formula

While comparing Zoisite and Powellite 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 Powellite chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Powellite- CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Brown Gemstones

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Zoisite Vs Pyrrhotite

Zoisite Vs Vesuvianite

Zoisite and Powellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Powellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Powellite Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 4.23 whereas that of Powellite is 4.23.