Cassiterite and Langbeinite Physical Properties

Cassiterite

Langbeinite

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Physical Properties

Tenacity

Brittle

Solubility

insoluble

Slowly dissolves in water

Durability

Specific Gravity

6.86-7.03-9999

1 7.18

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Fracture

Subconchoidal, Uneven, Conchoidal, Irregular

Conchoidal

Cleavage

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

None

Mohs Hardness

6-73.5-4

2 10

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Chemical Composition

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

K2Mg2(SO4)3

Cassiterite and Langbeinite Chemical Formula

While comparing Cassiterite and Langbeinite 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 Langbeinite chemical formula.

Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Langbeinite- K2Mg2(SO4)3

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Cassiterite and Langbeinite Specific Gravity

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