Afghanite and Jet Physical Properties

Afghanite

Jet

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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

2.55-2.65

1.19-1.35

1.5 Fracture

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

ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

1.6 Cleavage

Perfect {10 1 0}

Not Available

1.7 Mohs Hardness

5.5-6

2.5-4

1.8 Chemical Composition

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

Not Available

Afghanite and Jet Chemical Formula

While comparing Afghanite and Jet 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 Afghanite and Jet chemical formula.

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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Afghanite Vs Glaucophane

Afghanite Vs Kainite

Afghanite Vs Hauyne

Afghanite and Jet Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Jet Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Jet Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 1.19-1.35 whereas that of Jet is 1.19-1.35.