Riebeckite and Aragonite Physical Properties

Riebeckite

Aragonite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Dilute acid

1.3 Durability

Not Available

1.4 Specific Gravity

3.28-3.442.93-2.96

1 7.18

1.5 Fracture

Uneven, Splintery, Brittle

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

1.6 Cleavage

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

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

1.7 Mohs Hardness

5.0-6.03.5-4

2 10

1.8 Chemical Composition

Not Available

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

Riebeckite and Aragonite Chemical Formula

While comparing Riebeckite and Aragonite 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 Riebeckite and Aragonite chemical formula.

Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Riebeckite and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Riebeckite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Riebeckite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Riebeckite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.