Cordierite and Rhodolite Physical Properties

Cordierite

Rhodolite

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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

2.57-2.663.84

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Conchoidal

1.6 Cleavage

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

none, may show indistinct parting

1.7 Mohs Hardness

7-7.57-7.5

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

(Mg,Fe)₃Al₂Si₃O₁₂

Cordierite and Rhodolite Chemical Formula

While comparing Cordierite and Rhodolite 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 Rhodolite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Rhodolite- (Mg,Fe)₃Al₂Si₃O₁₂

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Cordierite and Rhodolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Rhodolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Rhodolite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 3.84 whereas that of Rhodolite is 3.84.