Thomsonite and Scheelite Physical Properties

Thomsonite

Scheelite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.25-2.405.9-6.3

1 7.18

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Fracture

Conchoidal, Uneven

Cleavage

perfect on {010}; good on {100}

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

Mohs Hardness

5-5.54.5-5

2 10

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Chemical Composition

NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Thomsonite and Scheelite Chemical Formula

While comparing Thomsonite and Scheelite 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 Thomsonite and Scheelite chemical formula.

Chemical formula of Thomsonite- NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Scheelite- CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Thomsonite and Scheelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thomsonite and Scheelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thomsonite and Scheelite Optical Properties during the identification of gemstone. Specific gravity of Thomsonite is 5.9-6.3 whereas that of Scheelite is 5.9-6.3.