Zoisite and Friedelite Physical Properties

Zoisite

Friedelite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.20-3.503.06-3.19

1 7.18

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Fracture

Uneven, Conchoidal, Even

Uneven

Cleavage

Perfect {010} imperfect {100}

{010} Perfect

Mohs Hardness

6-74-5

2 10

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Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

Zoisite and Friedelite Chemical Formula

While comparing Zoisite and Friedelite 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 Friedelite chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

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Zoisite and Friedelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Friedelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Friedelite Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 3.06-3.19 whereas that of Friedelite is 3.06-3.19.