Wulfenite and Afghanite Physical Properties

Wulfenite

Afghanite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.50-7.002.55-2.65

1 7.18

1.5 Fracture

Irregular, Brittle, Conchoidal

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

1.6 Cleavage

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

Perfect {10 1 0}

1.7 Mohs Hardness

35.5-6

2 10

1.8 Chemical Composition

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

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

Wulfenite and Afghanite Chemical Formula

While comparing Wulfenite 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 Wulfenite and Afghanite chemical formula.

Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (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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Wulfenite and Afghanite Specific Gravity

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