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Pyromorphite
Pyromorphite

Cerussite
Cerussite



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Pyromorphite
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Cerussite

Pyromorphite and Cerussite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
insoluble

Durability

-
-

Specific Gravity

6.5-7.16.46-6.57
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Uneven, ConchoidalWalter Schumann, Conchoidal

Cleavage

Imperfect- [10 1 1]
Good [110] and [021]

Mohs Hardness

3.5-43-3.5
2 10
👆🏻

Chemical Composition

Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
PbCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Pyromorphite and Cerussite Chemical Formula

While comparing Pyromorphite and Cerussite 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 Cerussite chemical formula.

  • Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
  • Chemical formula of Cerussite- PbCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Pyromorphite and Cerussite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyromorphite and Cerussite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Cerussite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 6.46-6.57 whereas that of Cerussite is 6.46-6.57.