Adamite and Cordierite Physical Properties

Adamite

Cordierite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

4.32-4.482.57-2.66

1 7.18

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Fracture

Uneven, Subconchoidal, Conchoidal

Subconchoidal, Conchoidal

Cleavage

{101}, good; {010}, poor

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

Mohs Hardness

3.57-7.5

2 10

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Chemical Composition

Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)

Mg2Al4Si5O18

Adamite and Cordierite Chemical Formula

While comparing Adamite 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 Adamite and Cordierite chemical formula.

Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Cordierite- Mg2Al4Si5O18

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Adamite Vs Andean Opal

Adamite and Cordierite Specific Gravity

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