Hemimorphite and Aragonite Physical Properties

Hemimorphite

Aragonite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Dilute acid

Durability

Specific Gravity

3.30-3.502.93-2.96

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann, Conchoidal

Subconchoidal, Conchoidal

Cleavage

Perfect on {110}, poor on {101}, {001} rare

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

Mohs Hardness

53.5-4

2 10

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Chemical Composition

Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Hemimorphite and Aragonite Chemical Formula

While comparing Hemimorphite 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 Hemimorphite and Aragonite chemical formula.

Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Hemimorphite and Aragonite Specific Gravity

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