Verdite and Pyromorphite Physical Properties

Verdite

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

2.80-3.06.5-7.1

1 7.18

1.5 Fracture

Not Available

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

1.6 Cleavage

{110} Good

Imperfect- [10 1 1]

1.7 Mohs Hardness

33.5-4

2 10

1.8 Chemical Composition

NaFeS2•2(H2O)

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

Verdite and Pyromorphite Chemical Formula

While comparing Verdite 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 Verdite and Pyromorphite chemical formula.

Chemical formula of Verdite- NaFeS2•2(H2O)
Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

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Verdite and Pyromorphite Specific Gravity

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