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Austinite
Austinite

Pyromorphite
Pyromorphite



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Austinite
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Pyromorphite

Austinite and Pyromorphite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Easily soluble in cold dilute HCl
-

Durability

-
-

Specific Gravity

4.126.5-7.1
1 7.18
👆🏻

Fracture

Uneven
Uneven, Conchoidal

Cleavage

Good in two directions parallel to the prism faces {110}
Imperfect- [10 1 1]

Mohs Hardness

4-4.53.5-4
2 10
👆🏻

Chemical Composition

CaZn(AsO4)(OH)
Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

Austinite and Pyromorphite Chemical Formula

While comparing Austinite 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 Austinite and Pyromorphite chemical formula.

  • Chemical formula of Austinite- CaZn(AsO4)(OH)
  • Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

Austinite and Pyromorphite Specific Gravity

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