Vivianite and Pyrite Physical Properties

Vivianite

Pyrite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

2.64-2.705.00-5.20

1 7.18

1.5 Fracture

(e.g. graphite).

Uneven, Conchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle

1.6 Cleavage

{010} Perfect

Indistinct on {001}; partings on {011} and {111}

1.7 Mohs Hardness

Not Available6-6.5

2 10

1.8 Chemical Composition

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

FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Vivianite and Pyrite Chemical Formula

While comparing Vivianite and Pyrite 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 Pyrite chemical formula.

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

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Vivianite and Pyrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Pyrite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 5.00-5.20 whereas that of Pyrite is 5.00-5.20.