Vishnevite and Anhydrite Physical Properties

Vishnevite

Anhydrite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available2.90-2.98

1 7.18

1.5 Fracture

Brittle, Uneven

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

1.6 Cleavage

Perfect

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

Not Available

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

Vishnevite and Anhydrite Chemical Formula

While comparing Vishnevite 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 Vishnevite and Anhydrite chemical formula.

Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Vishnevite and Anhydrite Specific Gravity

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