Cordierite and Almandine Garnet Physical Properties

Cordierite

Almandine Garnet

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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

2.57-2.664.3

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Not Available

1.6 Cleavage

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

None.

1.7 Mohs Hardness

7-7.57.5-8.5

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

Fe₃Al₂Si₃O₁₂

Cordierite and Almandine Garnet Chemical Formula

While comparing Cordierite and Almandine Garnet 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 Almandine Garnet chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Almandine Garnet- Fe₃Al₂Si₃O₁₂

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Cordierite and Almandine Garnet Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Almandine Garnet Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Almandine Garnet Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 4.3 whereas that of Almandine Garnet is 4.3.