Anthophyllite and Gypsum Physical Properties

Anthophyllite

Gypsum

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1 Physical Properties

1.1 Tenacity

Not Available

Flexible

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.9-3.52.20-2.40

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle

Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

5.5-62

2 10

1.8 Chemical Composition

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

CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

Anthophyllite and Gypsum Chemical Formula

While comparing Anthophyllite and Gypsum 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 Anthophyllite and Gypsum chemical formula.

Chemical formula of Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

Compare Brown Gemstones

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Anthophyllite Vs Brucite

Anthophyllite Vs Bronzite

Anthophyllite and Gypsum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anthophyllite and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anthophyllite and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Anthophyllite is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.