Albite and Gypsum Physical Properties

Albite

Gypsum

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1 Physical Properties

1.1 Tenacity

Brittle

Flexible

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.60-2.652.20-2.40

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal

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

1.6 Cleavage

Perfect on {001}, very good on {010}, imperfect on {110}

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

6-6.52

2 10

1.8 Chemical Composition

NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Albite and Gypsum Chemical Formula

While comparing Albite 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 Albite and Gypsum chemical formula.

Chemical formula of Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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Albite and Gypsum Specific Gravity

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