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Pyromorphite
Pyromorphite

Cordierite
Cordierite



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Pyromorphite
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Cordierite

Pyromorphite and Cordierite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

6.5-7.12.57-2.66
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Subconchoidal, Conchoidal

Cleavage

Imperfect- [10 1 1]
Fair on {100}, poor on {001} and {010}

Mohs Hardness

3.5-47-7.5
2 10
👆🏻

Chemical Composition

Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Mg2Al4Si5O18

Pyromorphite and Cordierite Chemical Formula

While comparing Pyromorphite and Cordierite 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 Cordierite chemical formula.

  • Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
  • Chemical formula of Cordierite- Mg2Al4Si5O18

Pyromorphite and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyromorphite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.