Anhydrite and Shigaite Physical Properties

Anhydrite

Shigaite

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1 Physical Properties

1.1 Tenacity

Brittle

Moderately ﬂexible

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-2.98

2.32

1.5 Fracture

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

Flexible Flexible fragments.

1.6 Cleavage

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

Perfect on {0001}

1.7 Mohs Hardness

3.5

1.8 Chemical Composition

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

Not Available

Anhydrite and Shigaite Chemical Formula

While comparing Anhydrite and Shigaite 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 Shigaite chemical formula.

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

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Anhydrite and Shigaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anhydrite and Shigaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Shigaite Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 2.32 whereas that of Shigaite is 2.32.