Cobaltite and Umbalite Physical Properties

Cobaltite

Umbalite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.33.62-4.33

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

Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

5.57-7.5

2 10

1.8 Chemical Composition

CoAsSAnthony et al , Handbook of mineralogy (2001)

Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)

Cobaltite and Umbalite Chemical Formula

While comparing Cobaltite and Umbalite 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 Umbalite chemical formula.

Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)
Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)

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Cobaltite and Umbalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cobaltite and Umbalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cobaltite and Umbalite Optical Properties during the identification of gemstone. Specific gravity of Cobaltite is 3.62-4.33 whereas that of Umbalite is 3.62-4.33.