Aragonite and Pyromorphite Physical Properties

Aragonite

Pyromorphite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Dilute acid

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.93-2.966.5-7.1

1 7.18

1.5 Fracture

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

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

1.6 Cleavage

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

Imperfect- [10 1 1]

1.7 Mohs Hardness

3.5-43.5-4

2 10

1.8 Chemical Composition

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

Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

Aragonite and Pyromorphite Chemical Formula

While comparing Aragonite and Pyromorphite 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 Pyromorphite chemical formula.

Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

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Aragonite and Pyromorphite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Aragonite and Pyromorphite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Aragonite and Pyromorphite Optical Properties during the identification of gemstone. Specific gravity of Aragonite is 6.5-7.1 whereas that of Pyromorphite is 6.5-7.1.