Cobaltite and Polyhalite Physical Properties

Cobaltite

Polyhalite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

6.32.78

1 7.18

1.5 Fracture

UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic

Conchoidal, Brittle

1.6 Cleavage

{100} Good, {010} Good, {001} Good

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

1.7 Mohs Hardness

5.53.5

2 10

1.8 Chemical Composition

CoAsSAnthony et al , Handbook of mineralogy (2001)

Not Available

Cobaltite and Polyhalite Chemical Formula

While comparing Cobaltite 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 Cobaltite and Polyhalite chemical formula.

Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)

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Cobaltite and Polyhalite Specific Gravity

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