Anhydrite and Anthophyllite Physical Properties

Anhydrite

Anthophyllite

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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

2.90-2.982.9-3.5

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle

1.6 Cleavage

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

{110} Perfect, {???} Distinct, {???} Distinct

1.7 Mohs Hardness

3.55.5-6

2 10

1.8 Chemical Composition

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

(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Anhydrite and Anthophyllite Chemical Formula

While comparing Anhydrite and Anthophyllite 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 Anthophyllite chemical formula.

Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Anhydrite and Anthophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anhydrite and Anthophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Anthophyllite Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 2.9-3.5 whereas that of Anthophyllite is 2.9-3.5.