Pyromorphite and Omphacite Physical Properties

Pyromorphite

Omphacite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.5-7.13.16-3.43

1 7.18

1.5 Fracture

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

Imperfect- [10 1 1]

{110} Good, {110} Good

1.7 Mohs Hardness

3.5-45-6

2 10

1.8 Chemical Composition

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

(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

Pyromorphite and Omphacite Chemical Formula

While comparing Pyromorphite and Omphacite 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 Omphacite chemical formula.

Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

Compare Green Gemstones

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Pyromorphite Vs Sapphire

Pyromorphite Vs Rutilated Quartz

Pyromorphite and Omphacite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyromorphite and Omphacite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Omphacite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 3.16-3.43 whereas that of Omphacite is 3.16-3.43.