Cobaltite and Almandine Physical Properties

Cobaltite

Almandine

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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

6.3

3.95-4.30

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, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

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

none

1.7 Mohs Hardness

5.5

7-7.5

1.8 Chemical Composition

CoAsSAnthony et al , Handbook of mineralogy (2001)

Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Cobaltite and Almandine Chemical Formula

While comparing Cobaltite and Almandine 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 Almandine chemical formula.

Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)
Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Cobaltite and Almandine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cobaltite and Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cobaltite and Almandine Optical Properties during the identification of gemstone. Specific gravity of Cobaltite is 3.95-4.30 whereas that of Almandine is 3.95-4.30.