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Cerussite
Cerussite

Pyromorphite
Pyromorphite



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Cerussite
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Pyromorphite

Cerussite and Pyromorphite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

insoluble
-

Durability

-
-

Specific Gravity

6.46-6.576.5-7.1
1 7.18
👆🏻

Fracture

Uneven, ConchoidalWalter Schumann, Conchoidal
Uneven, Conchoidal

Cleavage

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

Mohs Hardness

3-3.53.5-4
2 10
👆🏻

Chemical Composition

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

Cerussite and Pyromorphite Chemical Formula

While comparing Cerussite 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 Cerussite and Pyromorphite chemical formula.

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

Cerussite and Pyromorphite Specific Gravity

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