Zoisite and Hibschite Physical Properties

Zoisite

Hibschite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.20-3.503.05-3.08

1 7.18

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Fracture

Uneven, Conchoidal, Even

Uneven, Irregular, Conchoidal

Cleavage

Perfect {010} imperfect {100}

None

Mohs Hardness

6-76.5

2 10

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Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Ca 3Al 2(SiO 4) 3-x(OH) 4x (x=0.2 to 1.5)Anthony et al , Handbook of mineralogy (2001)

Zoisite and Hibschite Chemical Formula

While comparing Zoisite and Hibschite 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 Hibschite chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Hibschite- Ca 3Al 2(SiO 4) 3-x(OH) 4x (x=0.2 to 1.5)Anthony et al , Handbook of mineralogy (2001)

Compare Brown Gemstones

Zoisite Vs Mottramite

Zoisite Vs Pyrrhotite

Zoisite Vs Vesuvianite

Zoisite and Hibschite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Hibschite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Hibschite Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 3.05-3.08 whereas that of Hibschite is 3.05-3.08.