Omphacite and Purpurite Physical Properties

Omphacite

Purpurite

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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

3.16-3.433.2-3.4

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

{110} Good, {110} Good

[100] [001] perfect

1.7 Mohs Hardness

5-64-4.5

2 10

1.8 Chemical Composition

(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

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

Omphacite and Purpurite Chemical Formula

While comparing Omphacite and Purpurite 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 Omphacite and Purpurite chemical formula.

Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

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Omphacite and Purpurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Omphacite and Purpurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Omphacite and Purpurite Optical Properties during the identification of gemstone. Specific gravity of Omphacite is 3.2-3.4 whereas that of Purpurite is 3.2-3.4.