Povondraite and Purpurite Physical Properties

Povondraite

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

3.263.2-3.4

1 7.18

1.5 Fracture

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

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

None

[100] [001] perfect

1.7 Mohs Hardness

Not Available4-4.5

2 10

1.8 Chemical Composition

NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)

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

Povondraite and Purpurite Chemical Formula

While comparing Povondraite 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 Povondraite and Purpurite chemical formula.

Chemical formula of Povondraite- NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony 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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Povondraite and Purpurite Specific Gravity

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