Barite and Purpurite Physical Properties

Barite

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

4.483.2-3.4

1 7.18

1.5 Fracture

Uneven

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

{010} Perfect, {210} Perfect, {010} Imperfect

[100] [001] perfect

1.7 Mohs Hardness

3-3.54-4.5

2 10

1.8 Chemical Composition

BaSO4

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

Barite and Purpurite Chemical Formula

While comparing Barite 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 Barite and Purpurite chemical formula.

Chemical formula of Barite- BaSO4
Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

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Barite and Purpurite Specific Gravity

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