Neptunite and Scheelite Physical Properties

Neptunite

Scheelite

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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

3.19-3.235.9-6.3

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

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

1.6 Cleavage

{110} good

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

1.7 Mohs Hardness

5-64.5-5

2 10

1.8 Chemical Composition

KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Neptunite and Scheelite Chemical Formula

While comparing Neptunite 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 Neptunite and Scheelite chemical formula.

Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Scheelite- CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Neptunite and Scheelite Specific Gravity

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