Erythrite and Vivianite Physical Properties

Erythrite

Vivianite

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1 Physical Properties

1.1 Tenacity

Sectile

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.062.64-2.70

1 7.18

1.5 Fracture

Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

(e.g. graphite).

1.6 Cleavage

Perfect on {010}; poor on {100} and { 1 02}.

{010} Perfect

1.7 Mohs Hardness

Not AvailableNot Available

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

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

Erythrite and Vivianite Chemical Formula

While comparing Erythrite 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 Erythrite and Vivianite chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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Erythrite and Vivianite Specific Gravity

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