Cassiterite and Galena Physical Properties

Cassiterite

Galena

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.86-7.036.23

1 7.18

1.5 Fracture

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

Subconchoidal, Brittle, Metallic

1.6 Cleavage

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

Cubic perfect on [001], parting on [111]

1.7 Mohs Hardness

6-72.5-2.75

2 10

1.8 Chemical Composition

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

PbS

Cassiterite and Galena Chemical Formula

While comparing Cassiterite and Galena 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 Galena chemical formula.

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

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Cassiterite and Galena Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cassiterite and Galena Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cassiterite and Galena Optical Properties during the identification of gemstone. Specific gravity of Cassiterite is 6.23 whereas that of Galena is 6.23.