Erythrite and Riebeckite Physical Properties

Erythrite

Riebeckite

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1 Physical Properties

1.1 Tenacity

Sectile

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.06

3.28-3.44

1.5 Fracture

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

Uneven, Splintery, Brittle

1.6 Cleavage

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

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

1.7 Mohs Hardness

Not Available

5.0-6.0

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

Not Available

Erythrite and Riebeckite Chemical Formula

While comparing Erythrite and Riebeckite 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 Riebeckite chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)

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Erythrite and Riebeckite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.