Afghanite and Wulfenite Physical Properties

Afghanite

Wulfenite

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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

2.55-2.656.50-7.00

1 7.18

1.5 Fracture

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

Irregular, Brittle, Conchoidal

1.6 Cleavage

Perfect {10 1 0}

On {011}, distinct; on {001}, {013}, indistinct

1.7 Mohs Hardness

5.5-63

2 10

1.8 Chemical Composition

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

PbMoO 4Walter Schumann , Gemstones of the world (2001)

Afghanite and Wulfenite Chemical Formula

While comparing Afghanite and Wulfenite 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 Wulfenite 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 Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)

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Afghanite and Wulfenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Wulfenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Wulfenite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 6.50-7.00 whereas that of Wulfenite is 6.50-7.00.