Cordierite and Eudialyte Physical Properties

Cordierite

Eudialyte

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Physical Properties

Tenacity

Brittle

Solubility

H₂SO₄

Durability

Specific Gravity

2.57-2.662.74-3.00

1 7.18

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Fracture

Subconchoidal, Conchoidal

Uneven

Cleavage

Fair on {100}, poor on {001} and {010}

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

Mohs Hardness

7-7.55-5.5

2 10

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Chemical Composition

Mg2Al4Si5O18

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

Cordierite and Eudialyte Chemical Formula

While comparing Cordierite and Eudialyte 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 Cordierite and Eudialyte chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Eudialyte- Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.

Compare Blue Gemstones

Cordierite Vs Plumbogummite

Cordierite Vs Riebeckite

Cordierite Vs Rosasite

Cordierite and Eudialyte Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Eudialyte Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Eudialyte Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 2.74-3.00 whereas that of Eudialyte is 2.74-3.00.