Pleonaste and Cordierite Physical Properties

Pleonaste

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

3.802.57-2.66

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

87-7.5

2 10

1.8 Chemical Composition

(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

Mg2Al4Si5O18

Pleonaste and Cordierite Chemical Formula

While comparing Pleonaste 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 Pleonaste and Cordierite chemical formula.

Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Cordierite- Mg2Al4Si5O18

Compare Blue Gemstones

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Pleonaste Vs Rubellite

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Pleonaste and Cordierite Specific Gravity

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