Marialite and Polyhalite Physical Properties

Marialite

Polyhalite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.502.78

1 7.18

1.5 Fracture

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

Conchoidal, Brittle

1.6 Cleavage

Distinct on {100} and {110}

Perfect on {10 1 }; parting on {010}

1.7 Mohs Hardness

5.5-63.5

2 10

1.8 Chemical Composition

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

Not Available

Marialite and Polyhalite Chemical Formula

While comparing Marialite and Polyhalite 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 Polyhalite chemical formula.

Chemical formula of Marialite- 3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)

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Marialite and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Marialite and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Marialite and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Marialite is 2.78 whereas that of Polyhalite is 2.78.