Faustite and Anhydrite Physical Properties

Faustite

Anhydrite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.92.90-2.98

1 7.18

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Fracture

Conchoidal

Cleavage

{???} Indistinct

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

Mohs Hardness

4.53.5

2 10

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Chemical Composition

(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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

Faustite and Anhydrite Chemical Formula

While comparing Faustite 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 Faustite and Anhydrite chemical formula.

Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Faustite and Anhydrite Specific Gravity

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