Marialite and Gypsum Physical Properties

Marialite

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

2.502.20-2.40

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Distinct on {100} and {110}

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

5.5-62

2 10

1.8 Chemical Composition

3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)

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

Marialite and Gypsum Chemical Formula

While comparing Marialite 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 Marialite and Gypsum chemical formula.

Chemical formula of Marialite- 3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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Marialite and Gypsum Specific Gravity

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