Plumbogummite and Afghanite Physical Properties

Plumbogummite

Afghanite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.0142.55-2.65

1 7.18

1.5 Fracture

Uneven, Conchoidal

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

1.6 Cleavage

None

Perfect {10 1 0}

1.7 Mohs Hardness

4-55.5-6

2 10

1.8 Chemical Composition

Not Available

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

Plumbogummite and Afghanite Chemical Formula

While comparing Plumbogummite 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 Plumbogummite 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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Plumbogummite and Afghanite Specific Gravity

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