Eudialyte and Zoisite Physical Properties

Eudialyte

Zoisite

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Physical Properties

Tenacity

Brittle

Solubility

H₂SO₄

Durability

Specific Gravity

2.74-3.003.20-3.50

1 7.18

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Fracture

Uneven

Uneven, Conchoidal, Even

Cleavage

Distinct on {0001} imperfect on {11 2 0}

Perfect {010} imperfect {100}

Mohs Hardness

5-5.56-7

2 10

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Chemical Composition

Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.

Ca₂Al₃(SiO₄)₃(OH)

Eudialyte and Zoisite Chemical Formula

While comparing Eudialyte and Zoisite 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 Eudialyte and Zoisite chemical formula.

Chemical formula of Eudialyte- Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.
Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)

Compare Brown Gemstones

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Eudialyte Vs Jacobsite

Eudialyte and Zoisite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Eudialyte and Zoisite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Eudialyte and Zoisite Optical Properties during the identification of gemstone. Specific gravity of Eudialyte is 3.20-3.50 whereas that of Zoisite is 3.20-3.50.