Beudantite and Afghanite Physical Properties

Beudantite

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

4.482.55-2.65

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

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

1.6 Cleavage

distinct; good on {0001}

Perfect {10 1 0}

1.7 Mohs Hardness

3.5-4.55.5-6

2 10

1.8 Chemical Composition

PbFe+++3(AsO4)(SO4)(OH)6

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

Beudantite and Afghanite Chemical Formula

While comparing Beudantite 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 Beudantite and Afghanite chemical formula.

Chemical formula of Beudantite- PbFe+++3(AsO4)(SO4)(OH)6
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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Beudantite and Afghanite Specific Gravity

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