Poldervaartite and Cordierite Physical Properties

Poldervaartite

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

2.912.57-2.66

1 7.18

1.5 Fracture

Handbook of mineralogy (2001)

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

None

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

1.7 Mohs Hardness

Not Available7-7.5

2 10

1.8 Chemical Composition

(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

Mg2Al4Si5O18

Poldervaartite and Cordierite Chemical Formula

While comparing Poldervaartite 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 Poldervaartite and Cordierite chemical formula.

Chemical formula of Poldervaartite- (Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Cordierite- Mg2Al4Si5O18

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Poldervaartite and Cordierite Specific Gravity

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