Erythrite and Rutile Physical Properties

Erythrite

Rutile

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1 Physical Properties

1.1 Tenacity

Sectile

Not Available

1.2 Solubility

Not Available

Insoluble in acids

1.3 Durability

Not Available

1.4 Specific Gravity

3.064.20-4.30

1 7.18

1.5 Fracture

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

Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

{110} good, 100 moderate, parting on {092} and {011}

1.7 Mohs Hardness

Not Available6-6.5

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Erythrite and Rutile Chemical Formula

While comparing Erythrite and Rutile 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 Rutile chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Erythrite and Rutile Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Rutile Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Rutile Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 4.20-4.30 whereas that of Rutile is 4.20-4.30.