Purpurite and Vivianite Physical Properties

Purpurite

Vivianite

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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

3.2-3.42.64-2.70

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

(e.g. graphite).

1.6 Cleavage

[100] [001] perfect

{010} Perfect

1.7 Mohs Hardness

4-4.5Not Available

2 10

1.8 Chemical Composition

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

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Purpurite and Vivianite Chemical Formula

While comparing Purpurite and Vivianite 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 Vivianite chemical formula.

Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Compare Violet Gemstones

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Purpurite and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Purpurite and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Purpurite and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Purpurite is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.