Gypsum and Anthophyllite Physical Properties

Gypsum

Anthophyllite

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1 Physical Properties

1.1 Tenacity

Flexible

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.20-2.402.9-3.5

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle

1.6 Cleavage

Perfect on {010}, distinct on {100}

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

1.7 Mohs Hardness

25.5-6

2 10

1.8 Chemical Composition

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

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

Gypsum and Anthophyllite Chemical Formula

While comparing Gypsum 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 Gypsum and Anthophyllite chemical formula.

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

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Gypsum and Anthophyllite Specific Gravity

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