Erythrite and Augite Physical Properties

Erythrite

Augite

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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

3.06

3.19-3.56

1.5 Fracture

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

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

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

{110} Perfect, {010} Indistinct

1.7 Mohs Hardness

Not Available

5.5-6

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

Erythrite and Augite Chemical Formula

While comparing Erythrite and Augite 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 Augite chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

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Erythrite and Augite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Augite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Augite Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 3.19-3.56 whereas that of Augite is 3.19-3.56.