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Pyromorphite
Pyromorphite

Blue spinel
Blue spinel



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Pyromorphite
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Blue spinel

Pyromorphite and Blue spinel Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

6.5-7.1-9999
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
-

Cleavage

Imperfect- [10 1 1]
None

Mohs Hardness

3.5-4-9999
2 10
👆🏻

Chemical Composition

Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
MgAl2O4

Pyromorphite and Blue spinel Chemical Formula

While comparing Pyromorphite and Blue spinel 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 Blue spinel chemical formula.

  • Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
  • Chemical formula of Blue spinel- MgAl2O4

Pyromorphite and Blue spinel Specific Gravity

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