Nepouite and Afghanite Physical Properties

Nepouite

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

3.18-3.242.55-2.65

1 7.18

1.6 Fracture

Not Available

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

1.7 Cleavage

perfect on {001}

Perfect {10 1 0}

1.8 Mohs Hardness

25.5-6

2 10

1.9 Chemical Composition

Not Available

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

Nepouite and Afghanite Chemical Formula

While comparing Nepouite 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 Nepouite and Afghanite 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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Nepouite and Afghanite Specific Gravity

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