Cobaltite and Spinel Physical Properties

Cobaltite

Spinel

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

6.33.64-3.66

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, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

None, but may exhibit slight parting

1.7 Mohs Hardness

5.58

2 10

1.8 Chemical Composition

CoAsSAnthony et al , Handbook of mineralogy (2001)

MgAl₂O₄

Cobaltite and Spinel Chemical Formula

While comparing Cobaltite and Spinel 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 Spinel chemical formula.

Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)
Chemical formula of Spinel- MgAl₂O₄

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Cobaltite and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cobaltite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cobaltite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Cobaltite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.