Anhydrite and Agrellite Physical Properties

Anhydrite

Agrellite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-2.982.88

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

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

perfect [110]

1.7 Mohs Hardness

3.55.5

2 10

1.8 Chemical Composition

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

NaCa2Si4O10F

Anhydrite and Agrellite Chemical Formula

While comparing Anhydrite and Agrellite 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 Anhydrite and Agrellite chemical formula.

Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Agrellite- NaCa2Si4O10F

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Anhydrite and Agrellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anhydrite and Agrellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Agrellite Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 2.88 whereas that of Agrellite is 2.88.