Nepouite and Pyromorphite Physical Properties

Nepouite

Pyromorphite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.18-3.246.5-7.1

1 7.18

1.5 Fracture

Not Available

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

1.6 Cleavage

perfect on {001}

Imperfect- [10 1 1]

1.7 Mohs Hardness

23.5-4

2 10

1.8 Chemical Composition

Not Available

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

Nepouite and Pyromorphite Chemical Formula

While comparing Nepouite 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 Nepouite and Pyromorphite chemical formula.

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

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Nepouite and Pyromorphite Specific Gravity

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