Pyromorphite and Gahnite Physical Properties

Pyromorphite

Gahnite

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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

6.5-7.14.00-4.62

1 7.18

1.5 Fracture

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

Conchoidal, Uneven

1.6 Cleavage

Imperfect- [10 1 1]

Indistinct parting on [111]

1.7 Mohs Hardness

3.5-47.5-8

2 10

1.8 Chemical Composition

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

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Pyromorphite and Gahnite Chemical Formula

While comparing Pyromorphite and Gahnite 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 Gahnite chemical formula.

Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Green Gemstones

Pyromorphite Vs Sapphire

Pyromorphite Vs Rutilated Quartz

Pyromorphite Vs Sapphirine

Pyromorphite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyromorphite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.