Scheelite and Riebeckite Physical Properties

Scheelite

Riebeckite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

5.9-6.33.28-3.44

1 7.18

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Fracture

Conchoidal, Uneven

Uneven, Splintery

Cleavage

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

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

Mohs Hardness

4.5-55.0-6.0

2 10

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Chemical Composition

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

Na2Fe2+3Fe3+2Si8O22(OH)2

Scheelite and Riebeckite Chemical Formula

While comparing Scheelite and Riebeckite 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 Riebeckite chemical formula.

Chemical formula of Scheelite- CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Riebeckite- Na2Fe2+3Fe3+2Si8O22(OH)2

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Scheelite and Riebeckite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Scheelite and Riebeckite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Scheelite and Riebeckite Optical Properties during the identification of gemstone. Specific gravity of Scheelite is 3.28-3.44 whereas that of Riebeckite is 3.28-3.44.