Pyrargyrite and Anhydrite Physical Properties

Pyrargyrite

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

5.852.90-2.98

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Brittle

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

1.6 Cleavage

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

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

1.7 Mohs Hardness

2.5-33.5

2 10

1.8 Chemical Composition

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

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

Pyrargyrite and Anhydrite Chemical Formula

While comparing Pyrargyrite 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 Pyrargyrite and Anhydrite chemical formula.

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

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Pyrargyrite and Anhydrite Specific Gravity

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