Fayalite and Anhydrite Physical Properties

Fayalite

Anhydrite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

4.3922.90-2.98

1 7.18

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Fracture

Conchoidal

Cleavage

{010} moderate, {100} imperfect

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

Mohs Hardness

6.5-73.5

2 10

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Chemical Composition

Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Fayalite and Anhydrite Chemical Formula

While comparing Fayalite 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 Fayalite and Anhydrite chemical formula.

Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Fayalite and Anhydrite Specific Gravity

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