Cobaltite and Afghanite Physical Properties

Cobaltite

Afghanite

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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

6.32.55-2.65

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

1.6 Cleavage

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

Perfect {10 1 0}

1.7 Mohs Hardness

5.55.5-6

2 10

1.8 Chemical Composition

CoAsSAnthony et al , Handbook of mineralogy (2001)

(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

Cobaltite and Afghanite Chemical Formula

While comparing Cobaltite and Afghanite 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 Afghanite chemical formula.

Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)
Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

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Cobaltite and Afghanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cobaltite and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cobaltite and Afghanite Optical Properties during the identification of gemstone. Specific gravity of Cobaltite is 2.55-2.65 whereas that of Afghanite is 2.55-2.65.