Neptunite and Anhydrite Physical Properties

Neptunite

Anhydrite

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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

3.19-3.232.90-2.98

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

{110} good

Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.

1.7 Mohs Hardness

5-63.5

2 10

1.8 Chemical Composition

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

CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Neptunite and Anhydrite Chemical Formula

While comparing Neptunite and Anhydrite 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 Anhydrite chemical formula.

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

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Neptunite and Anhydrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Neptunite and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Neptunite and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Neptunite is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.