Coral and Anhydrite Physical Properties

Coral

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

2.60-2.70

2.90-2.98

1.5 Fracture

Irregular, Irregular, Gemstones of the world (2001)

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

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

3-4

3.5

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

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

Coral and Anhydrite Chemical Formula

While comparing Coral 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 Coral and Anhydrite chemical formula.

Chemical formula of Coral- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Coral and Anhydrite Specific Gravity

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