Vivianite and Azurite Physical Properties

Vivianite

Azurite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.64-2.70

3.70-3.90

1.5 Fracture

(e.g. graphite).

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

{010} Perfect

Perfect on {011}, fair on {100}, poor on {110}

1.7 Mohs Hardness

Not Available

3.5-4

1.8 Chemical Composition

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

Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Vivianite and Azurite Chemical Formula

While comparing Vivianite and Azurite 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 Vivianite and Azurite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Azurite- Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Vivianite and Azurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Azurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Azurite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 3.70-3.90 whereas that of Azurite is 3.70-3.90.