Gypsum and Sanidine Physical Properties

Gypsum

Sanidine

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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

2.20-2.402.54-2.61

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect on {010}, distinct on {100}

{001} Perfect, {010} Good

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

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

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

Gypsum and Sanidine Chemical Formula

While comparing Gypsum and Sanidine 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 Sanidine chemical formula.

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

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Gypsum and Sanidine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gypsum and Sanidine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gypsum and Sanidine Optical Properties during the identification of gemstone. Specific gravity of Gypsum is 2.54-2.61 whereas that of Sanidine is 2.54-2.61.