Onyx and Cassiterite Physical Properties

Onyx

Cassiterite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.706.86-7.03

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Indiscernible

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

1.7 Mohs Hardness

6.5-76-7

2 10

1.8 Chemical Composition

SiO₂

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

Onyx and Cassiterite Chemical Formula

While comparing Onyx 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 Onyx and Cassiterite chemical formula.

Chemical formula of Onyx- SiO₂
Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Onyx and Cassiterite Specific Gravity

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