Aragonite and Cordierite Iolite Physical Properties

Aragonite

Cordierite Iolite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Dilute acid

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.93-2.962.56-2.66

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

Distinct on {010}, imperfect {110} and {011}

Not Available

1.7 Mohs Hardness

3.5-47-7.5

2 10

1.8 Chemical Composition

CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.

Aragonite and Cordierite Iolite Chemical Formula

While comparing Aragonite and Cordierite Iolite 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 Aragonite and Cordierite Iolite chemical formula.

Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.

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Aragonite and Cordierite Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Aragonite and Cordierite Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Aragonite and Cordierite Iolite Optical Properties during the identification of gemstone. Specific gravity of Aragonite is 2.56-2.66 whereas that of Cordierite Iolite is 2.56-2.66.