Erythrite and Cassiterite Physical Properties

Erythrite

Cassiterite

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1 Physical Properties

1.1 Tenacity

Sectile

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.066.86-7.03

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

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

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

1.7 Mohs Hardness

Not Available6-7

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

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

Erythrite and Cassiterite Chemical Formula

While comparing Erythrite and Cassiterite 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 Cassiterite chemical formula.

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

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Erythrite and Cassiterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Erythrite and Cassiterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Erythrite and Cassiterite Optical Properties during the identification of gemstone. Specific gravity of Erythrite is 6.86-7.03 whereas that of Cassiterite is 6.86-7.03.