Charoite and Anhydrite Physical Properties

Charoite

Anhydrite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.54-2.782.90-2.98

1 7.18

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Fracture

Conchoidal

Cleavage

Good in three directions

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

Mohs Hardness

5-63.5

2 10

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Chemical Composition

K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Charoite and Anhydrite Chemical Formula

While comparing Charoite 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 Charoite and Anhydrite chemical formula.

Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Charoite and Anhydrite Specific Gravity

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