Polyhalite and Nosean Physical Properties

Polyhalite

Nosean

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.782.30-2.40

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

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

{110} Perfect

1.7 Mohs Hardness

3.5Not Available

2 10

1.8 Chemical Composition

Not Available

Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)

Polyhalite and Nosean Chemical Formula

While comparing Polyhalite and Nosean 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 Polyhalite and Nosean chemical formula.

Chemical formula of Nosean- Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)

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Polyhalite and Nosean Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Nosean Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Nosean Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 2.30-2.40 whereas that of Nosean is 2.30-2.40.