Pyromorphite and Zincite Physical Properties

Pyromorphite

Zincite

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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

6.5-7.15.50-5.90

1 7.18

1.5 Fracture

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Imperfect- [10 1 1]

On {10 1 0}, perfect; parting on {000 1 }

1.7 Mohs Hardness

3.5-44

2 10

1.8 Chemical Composition

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

(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)

Pyromorphite and Zincite Chemical Formula

While comparing Pyromorphite and Zincite 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 Zincite chemical formula.

Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
Chemical formula of Zincite- (Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)

Compare Green Gemstones

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Pyromorphite Vs Sapphire

Pyromorphite Vs Rutilated Quartz

Pyromorphite and Zincite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyromorphite and Zincite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Zincite Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 5.50-5.90 whereas that of Zincite is 5.50-5.90.