Pyromorphite and Aragonite Physical Properties

Pyromorphite

Aragonite

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Physical Properties

Tenacity

Brittle

Solubility

Dilute acid

Durability

Specific Gravity

6.5-7.12.93-2.96

1 7.18

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Fracture

Uneven, Conchoidal

Subconchoidal, Conchoidal

Cleavage

Imperfect- [10 1 1]

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

Mohs Hardness

3.5-43.5-4

2 10

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Chemical Composition

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

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

Pyromorphite and Aragonite Chemical Formula

While comparing Pyromorphite 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 Pyromorphite and Aragonite chemical formula.

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

Compare Green Gemstones

Pyromorphite Vs Smaragdite

Pyromorphite Vs Smithsonite

Pyromorphite Vs Sphalerite

Pyromorphite and Aragonite Specific Gravity

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