Cordierite and Glaucophane Physical Properties

Cordierite

Glaucophane

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.57-2.663-3.15

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

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

Good on [110] and on [001]

1.7 Mohs Hardness

7-7.56.0-6.5

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

[ ]Na2(Mg3Al2)Si8O22(OH)2

Cordierite and Glaucophane Chemical Formula

While comparing Cordierite and Glaucophane 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 Glaucophane chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Glaucophane- [ ]Na2(Mg3Al2)Si8O22(OH)2

Compare Blue Gemstones

Cordierite Vs Plumbogummite

Cordierite Vs Rosasite

Cordierite Vs Riebeckite

Cordierite and Glaucophane Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Glaucophane Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Glaucophane Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 3-3.15 whereas that of Glaucophane is 3-3.15.