Zoisite and Hibonite Physical Properties

Zoisite

Hibonite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.20-3.503.84

1 7.18

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Fracture

Uneven, Conchoidal, Even

Subconchoidal, Conchoidal

Cleavage

Perfect {010} imperfect {100}

{0001} good, {10 1 0} parting

Mohs Hardness

6-77.5-8

2 10

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Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

(Ca,Ce)(Al,Ti,Mg)12O19

Zoisite and Hibonite Chemical Formula

While comparing Zoisite and Hibonite 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 Hibonite chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Hibonite- (Ca,Ce)(Al,Ti,Mg)12O19

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Zoisite and Hibonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Hibonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Hibonite Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 3.84 whereas that of Hibonite is 3.84.