Gypsum and Fayalite Physical Properties

Gypsum

Fayalite

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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

2.20-2.404.392

1 7.18

1.5 Fracture

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

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

Perfect on {010}, distinct on {100}

{010} moderate, {100} imperfect

1.7 Mohs Hardness

26.5-7

2 10

1.8 Chemical Composition

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

Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Gypsum and Fayalite Chemical Formula

While comparing Gypsum and Fayalite 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 Fayalite chemical formula.

Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Gypsum and Fayalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gypsum and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gypsum and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Gypsum is 4.392 whereas that of Fayalite is 4.392.