Vivianite and Hodgkinsonite Physical Properties

Vivianite

Hodgkinsonite

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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

2.64-2.704.06-4.08

1 7.18

1.5 Fracture

(e.g. graphite).

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

1.6 Cleavage

{010} Perfect

{???} Perfect

1.7 Mohs Hardness

Not Available4.5-5

2 10

1.8 Chemical Composition

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

Mn2+ Zn 2SiO 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Vivianite and Hodgkinsonite Chemical Formula

While comparing Vivianite and Hodgkinsonite 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 Hodgkinsonite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Hodgkinsonite- Mn2+ Zn 2SiO 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Vivianite and Hodgkinsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Hodgkinsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Hodgkinsonite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 4.06-4.08 whereas that of Hodgkinsonite is 4.06-4.08.