Erythrite and Albite Physical Properties

Erythrite

Albite

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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

3.062.60-2.65

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal

1.6 Cleavage

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

Perfect on {001}, very good on {010}, imperfect on {110}

1.7 Mohs Hardness

Not Available6-6.5

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Erythrite and Albite Chemical Formula

While comparing Erythrite and Albite 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 Albite chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Erythrite and Albite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Albite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Albite Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 2.60-2.65 whereas that of Albite is 2.60-2.65.