Aragonite and Herderite Physical Properties

Aragonite

Herderite

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Physical Properties

Tenacity

Brittle

Solubility

Dilute acid

Durability

Specific Gravity

2.93-2.962.90-3.02

1 7.18

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Fracture

Subconchoidal, Conchoidal

Cleavage

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

Indistinct on {110}

Mohs Hardness

3.5-45-5.5

2 10

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Chemical Composition

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

CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Aragonite and Herderite Chemical Formula

While comparing Aragonite and Herderite 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 Herderite chemical formula.

Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.

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Aragonite and Herderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Aragonite and Herderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Aragonite and Herderite Optical Properties during the identification of gemstone. Specific gravity of Aragonite is 2.90-3.02 whereas that of Herderite is 2.90-3.02.