Moldavite and Pyromorphite Physical Properties

Moldavite

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

2.32-2.386.5-7.1

1 7.18

1.5 Fracture

ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)

Uneven, ConchoidalArthur Thomas, Brittle, Metallic

1.6 Cleavage

Not Available

Imperfect- [10 1 1]

1.7 Mohs Hardness

5.53.5-4

2 10

1.8 Chemical Composition

SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)

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

Moldavite and Pyromorphite Chemical Formula

While comparing Moldavite 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 Moldavite and Pyromorphite chemical formula.

Chemical formula of Moldavite- SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)
Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)

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Moldavite and Pyromorphite Specific Gravity

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