Erythrite and Cobaltite Physical Properties

Erythrite

Cobaltite

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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

3.066.3

1 7.18

1.5 Fracture

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

UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic

1.6 Cleavage

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

{100} Good, {010} Good, {001} Good

1.7 Mohs Hardness

Not Available5.5

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

CoAsSAnthony et al , Handbook of mineralogy (2001)

Erythrite and Cobaltite Chemical Formula

While comparing Erythrite and Cobaltite 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 Cobaltite chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)

Compare Red Gemstones

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Erythrite and Cobaltite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 6.3 whereas that of Cobaltite is 6.3.