Afghanite and Bornite Physical Properties

Afghanite

Bornite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.65

5.06-5.08

1.5 Fracture

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

Uneven, Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

Perfect {10 1 0}

Poor on [111].

1.7 Mohs Hardness

5.5-6

3-3.25

1.8 Chemical Composition

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

Cu5FeS4

Afghanite and Bornite Chemical Formula

While comparing Afghanite and Bornite 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 Bornite 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)
Chemical formula of Bornite- Cu5FeS4

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Afghanite and Bornite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Bornite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Bornite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 5.06-5.08 whereas that of Bornite is 5.06-5.08.