Zoisite and Elbaite Physical Properties

Zoisite

Elbaite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.20-3.502.90-3.10

1 7.18

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Fracture

Uneven, Conchoidal, Even

Uneven, Conchoidal

Cleavage

Perfect {010} imperfect {100}

Poor/indistinct on {1120} and {1011}

Mohs Hardness

6-77

2 10

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Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

Zoisite and Elbaite Chemical Formula

While comparing Zoisite and Elbaite 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 Elbaite chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

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Zoisite and Elbaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Elbaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Elbaite Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 2.90-3.10 whereas that of Elbaite is 2.90-3.10.