Vivianite and Pyrargyrite Physical Properties

Vivianite

Pyrargyrite

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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

2.64-2.705.85

1 7.18

1.5 Fracture

(e.g. graphite).

Conchoidal, Uneven, ConchoidalArthur Thomas, Brittle

1.6 Cleavage

{010} Perfect

Distinct on {10 1 1}, imperfect on {01 1 2}

1.7 Mohs Hardness

Not Available2.5-3

2 10

1.8 Chemical Composition

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

Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Vivianite and Pyrargyrite Chemical Formula

While comparing Vivianite and Pyrargyrite 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 Pyrargyrite chemical formula.

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

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Vivianite and Pyrargyrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Pyrargyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Pyrargyrite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 5.85 whereas that of Pyrargyrite is 5.85.