Anhydrite and Phlogopite Physical Properties

Anhydrite

Phlogopite

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1 Physical Properties

1.1 Tenacity

Brittle

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-2.98

2.78-2.85

1.5 Fracture

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

None, Uneven

1.6 Cleavage

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

Perfect basal (001)

1.7 Mohs Hardness

3.5

2-2.5

1.8 Chemical Composition

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

Not Available

Anhydrite and Phlogopite Chemical Formula

While comparing Anhydrite and Phlogopite 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 Phlogopite chemical formula.

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

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Anhydrite and Phlogopite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anhydrite and Phlogopite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Phlogopite Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 2.78-2.85 whereas that of Phlogopite is 2.78-2.85.