Poudretteite and Anhydrite Physical Properties

Poudretteite

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

2.51-2.532.90-2.98

1 7.18

1.5 Fracture

Conchoidal, Splintery

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

1.6 Cleavage

None

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

1.7 Mohs Hardness

53.5

2 10

1.8 Chemical Composition

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Poudretteite and Anhydrite Chemical Formula

While comparing Poudretteite 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 Poudretteite and Anhydrite chemical formula.

Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare Violet Gemstones

Poudretteite Vs Rutilated Quartz

Poudretteite Vs Sapphire

Poudretteite Vs Rubellite

Poudretteite and Anhydrite Specific Gravity

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