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Pyromorphite
Pyromorphite

Calcite
Calcite



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Pyromorphite
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Calcite

Pyromorphite and Calcite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
Soluble

Durability

-
-

Specific Gravity

6.5-7.12.67-2.73
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Conchoidal

Cleavage

Imperfect- [10 1 1]
Perfect on [10 1 1] three directions with angle of 74° 55

Mohs Hardness

3.5-43
2 10
👆🏻

Chemical Composition

Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
CaCO 3Ulrich Henn and Claudio C.

Pyromorphite and Calcite Chemical Formula

While comparing Pyromorphite and Calcite 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 Calcite chemical formula.

  • Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
  • Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

Pyromorphite and Calcite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyromorphite and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Calcite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 2.67-2.73 whereas that of Calcite is 2.67-2.73.