Erythrite and Chiastolite Physical Properties

Erythrite

Chiastolite

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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

3.063.00-3.15

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

Not Available5-5.5

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)

Erythrite and Chiastolite Chemical Formula

While comparing Erythrite and Chiastolite 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 Chiastolite chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Chiastolite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)

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Erythrite and Chiastolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Chiastolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Chiastolite Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 3.00-3.15 whereas that of Chiastolite is 3.00-3.15.