Pyromorphite and Cuprite Physical Properties

Pyromorphite

Cuprite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.5-7.15.85-6.15

1 7.18

1.5 Fracture

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

Conchoidal, Metallic, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

Imperfect- [10 1 1]

Fair in four directions forming octahedrons

1.7 Mohs Hardness

3.5-43.5-4

2 10

1.8 Chemical Composition

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

Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Pyromorphite and Cuprite Chemical Formula

While comparing Pyromorphite and Cuprite 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 Cuprite chemical formula.

Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Chemical formula of Cuprite- Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Green Gemstones

Pyromorphite Vs Rutilated Quartz

Pyromorphite Vs Sapphirine

Pyromorphite Vs Sapphire

Pyromorphite and Cuprite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyromorphite and Cuprite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Cuprite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 5.85-6.15 whereas that of Cuprite is 5.85-6.15.