Purpurite and Melanite Physical Properties

Purpurite

Melanite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.2-3.43.70-4.10

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

[100] [001] perfect

Not Available

1.7 Mohs Hardness

4-4.56.5-7

2 10

1.8 Chemical Composition

MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Purpurite and Melanite Chemical Formula

While comparing Purpurite and Melanite 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 Purpurite and Melanite chemical formula.

Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Melanite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Compare Violet Gemstones

Purpurite Vs Sard

Purpurite Vs Sapphire

Purpurite Vs Sardonyx

Purpurite and Melanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Purpurite and Melanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Purpurite and Melanite Optical Properties during the identification of gemstone. Specific gravity of Purpurite is 3.70-4.10 whereas that of Melanite is 3.70-4.10.