Pyromorphite and Scheelite Physical Properties

Pyromorphite

Scheelite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.5-7.15.9-6.3

1 7.18

1.5 Fracture

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Uneven

1.6 Cleavage

Imperfect- [10 1 1]

On {101}, distinct; on {112}, interrupted; on {001}, indistinct

1.7 Mohs Hardness

3.5-44.5-5

2 10

1.8 Chemical Composition

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

CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Pyromorphite and Scheelite Chemical Formula

While comparing Pyromorphite and Scheelite 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 Scheelite chemical formula.

Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Chemical formula of Scheelite- CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Pyromorphite and Scheelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyromorphite and Scheelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Scheelite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 5.9-6.3 whereas that of Scheelite is 5.9-6.3.