Pumpellyite and Cordierite Physical Properties

Pumpellyite

Cordierite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.20-3.302.57-2.66

1 7.18

1.5 Fracture

Not Available

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

5-67-7.5

2 10

1.8 Chemical Composition

Ca 2(Mg,Fe,Mn,Al) 2(SiO 4)(Si 2O 7)(OH) 2 · H 2OUlrich Henn and Claudio C.

Mg2Al4Si5O18

Pumpellyite and Cordierite Chemical Formula

While comparing Pumpellyite and Cordierite 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 Pumpellyite and Cordierite chemical formula.

Chemical formula of Pumpellyite- Ca 2(Mg,Fe,Mn,Al) 2(SiO 4)(Si 2O 7)(OH) 2 · H 2OUlrich Henn and Claudio C.
Chemical formula of Cordierite- Mg2Al4Si5O18

Compare Green Gemstones

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Pumpellyite Vs Rubellite

Pumpellyite Vs Rutilated Quartz

Pumpellyite and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pumpellyite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pumpellyite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Pumpellyite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.