Scheelite and Prehnite Physical Properties

Scheelite

Prehnite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.9-6.32.80-2.95

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Uneven

Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic

1.6 Cleavage

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

Distinct on [001]

1.7 Mohs Hardness

4.5-56-6.5

2 10

1.8 Chemical Composition

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

Ca₂Al₂Si₃O₁₂(OH)

Scheelite and Prehnite Chemical Formula

While comparing Scheelite and Prehnite 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 Prehnite chemical formula.

Chemical formula of Scheelite- CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Prehnite- Ca₂Al₂Si₃O₁₂(OH)

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Scheelite and Prehnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Scheelite and Prehnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Scheelite and Prehnite Optical Properties during the identification of gemstone. Specific gravity of Scheelite is 2.80-2.95 whereas that of Prehnite is 2.80-2.95.