Peridot and Pyromorphite Physical Properties

Peridot

Pyromorphite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.54-1.556.5-7.1

1 7.18

1.5 Fracture

Conchoidal

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

1.6 Cleavage

Poor

Imperfect- [10 1 1]

1.7 Mohs Hardness

6.5-73.5-4

2 10

1.8 Chemical Composition

(Mg,Fe)₂SiO₄

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

Peridot and Pyromorphite Chemical Formula

While comparing Peridot 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 Peridot and Pyromorphite chemical formula.

Chemical formula of Peridot- (Mg,Fe)₂SiO₄
Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

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Peridot and Pyromorphite Specific Gravity

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