Aragonite and Ajoite Physical Properties

Aragonite

Ajoite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Dilute acid

Decomposed by acids

1.3 Durability

Not Available

1.4 Specific Gravity

2.93-2.962.96

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

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

Perfect on {010}

1.7 Mohs Hardness

3.5-45

2 10

1.8 Chemical Composition

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

(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

Aragonite and Ajoite Chemical Formula

While comparing Aragonite and Ajoite 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 Ajoite chemical formula.

Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Ajoite- (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

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Aragonite and Ajoite Specific Gravity

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