Adamite and Pyromorphite Physical Properties

Adamite

Pyromorphite

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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

4.32-4.48

6.5-7.1

1.5 Fracture

Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

1.6 Cleavage

{101}, good; {010}, poor

Imperfect- [10 1 1]

1.7 Mohs Hardness

3.5

3.5-4

1.8 Chemical Composition

Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)

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

Adamite and Pyromorphite Chemical Formula

While comparing Adamite 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 Adamite and Pyromorphite chemical formula.

Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

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Adamite and Pyromorphite Specific Gravity

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