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Pyromorphite
Pyromorphite

Obsidian
Obsidian



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Pyromorphite
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Pyromorphite and Obsidian Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
6.5-7.1
2.35-2.60
1.5 Fracture
Uneven, ConchoidalArthur Thomas, Brittle, Metallic
Conchoidal, ConchoidalWalter Schumann, Conchoidal
1.6 Cleavage
Imperfect- [10 1 1]
Not Available
1.7 Mohs Hardness
3.5-4
5-5.5
1.8 Chemical Composition
Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Not Available

Pyromorphite and Obsidian Chemical Formula

While comparing Pyromorphite and Obsidian 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 Obsidian chemical formula.

  • Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
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Pyromorphite and Obsidian Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyromorphite and Obsidian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Obsidian Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 2.35-2.60 whereas that of Obsidian is 2.35-2.60.