Polyhalite and Cobaltite Physical Properties

Polyhalite

Cobaltite

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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

2.786.3

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

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

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

1.7 Mohs Hardness

3.55.5

2 10

1.8 Chemical Composition

Not Available

CoAsSAnthony et al , Handbook of mineralogy (2001)

Polyhalite and Cobaltite Chemical Formula

While comparing Polyhalite and Cobaltite 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 Cobaltite chemical formula.

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

Compare Red Gemstones

Polyhalite Vs Jacinth

Polyhalite Vs Heliotrope

Polyhalite Vs Vanadinite

Polyhalite and Cobaltite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 6.3 whereas that of Cobaltite is 6.3.