Anhydrite and Pyrargyrite Physical Properties

Anhydrite

Pyrargyrite

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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

2.90-2.985.85

1 7.18

1.5 Fracture

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

Conchoidal, Uneven, ConchoidalArthur Thomas, Brittle

1.6 Cleavage

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

Distinct on {10 1 1}, imperfect on {01 1 2}

1.7 Mohs Hardness

3.52.5-3

2 10

1.8 Chemical Composition

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

Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Anhydrite and Pyrargyrite Chemical Formula

While comparing Anhydrite and Pyrargyrite 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 Anhydrite and Pyrargyrite chemical formula.

Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Pyrargyrite- Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Anhydrite and Pyrargyrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anhydrite and Pyrargyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Pyrargyrite Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 5.85 whereas that of Pyrargyrite is 5.85.