Adamite and Anhydrite Physical Properties

Adamite

Anhydrite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

4.32-4.482.90-2.98

1 7.18

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Fracture

Uneven, Subconchoidal, Conchoidal

Conchoidal

Cleavage

{101}, good; {010}, poor

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

Mohs Hardness

3.53.5

2 10

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Chemical Composition

Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)

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

Adamite and Anhydrite Chemical Formula

While comparing Adamite 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 Adamite and Anhydrite chemical formula.

Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Adamite and Anhydrite Specific Gravity

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