Periclase and Pyromorphite Physical Properties

Periclase

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

3.7-3.96.5-7.1

1 7.18

1.5 Fracture

Conchoidal, Brittle

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

1.6 Cleavage

{001} perfect; {111} imperfect, may exhibit parting on , {011}

Imperfect- [10 1 1]

1.7 Mohs Hardness

5.5-63.5-4

2 10

1.8 Chemical Composition

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

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

Periclase and Pyromorphite Chemical Formula

While comparing Periclase 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 Periclase and Pyromorphite chemical formula.

Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

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Periclase and Pyromorphite Specific Gravity

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