Scheelite and Lazurite Physical Properties

Scheelite

Lazurite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

5.9-6.32.75

1 7.18

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Fracture

Conchoidal, Uneven

Uneven, Conchoidal

Cleavage

On {101}, distinct; on {112}, interrupted; on {001}, indistinct

Imperfect on {110}

Mohs Hardness

4.5-55.5

2 10

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Chemical Composition

CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Scheelite and Lazurite Chemical Formula

While comparing Scheelite and Lazurite 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 Scheelite and Lazurite chemical formula.

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

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Scheelite and Lazurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Scheelite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Scheelite and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Scheelite is 2.75 whereas that of Lazurite is 2.75.