Cassiterite and Erythrite Physical Properties

Cassiterite

Erythrite

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1 Physical Properties

1.1 Tenacity

Brittle

Sectile

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.86-7.033.06

1 7.18

1.5 Fracture

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular

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

1.6 Cleavage

{100} imperfect, {110} indistinct; partings on {111} or {011}

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

1.7 Mohs Hardness

6-7Not Available

2 10

1.8 Chemical Composition

SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Co3(AsO4)2•8(H2O)

Cassiterite and Erythrite Chemical Formula

While comparing Cassiterite and Erythrite 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 Cassiterite and Erythrite chemical formula.

Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)

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Cassiterite and Erythrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cassiterite and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cassiterite and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Cassiterite is 3.06 whereas that of Erythrite is 3.06.