Lazurite and Cassiterite Physical Properties

Lazurite

Cassiterite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.756.86-7.03

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle

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

1.6 Cleavage

Imperfect on {110}

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

1.7 Mohs Hardness

5.56-7

2 10

1.8 Chemical Composition

(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

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

Lazurite and Cassiterite Chemical Formula

While comparing Lazurite 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 Lazurite and Cassiterite chemical formula.

Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Chemical formula of Cassiterite- SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Lazurite and Cassiterite Specific Gravity

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