Scapolite and Scheelite Physical Properties

Scapolite

Scheelite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.58-2.745.9-6.3

1 7.18

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Fracture

ConchoidalWalter Schumann, Splintery

Conchoidal, Uneven

Cleavage

{100} Distinct, {110} Distinct

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

Mohs Hardness

5.5-64.5-5

2 10

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Chemical Composition

Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references

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

Scapolite and Scheelite Chemical Formula

While comparing Scapolite 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 Scapolite and Scheelite chemical formula.

Chemical formula of Scapolite- Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Scheelite- CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Scapolite and Scheelite Specific Gravity

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