Afghanite and Smithsonite Physical Properties

Afghanite

Smithsonite

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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

2.55-2.65

4.00-4.65

1.5 Fracture

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

Uneven, Sub-Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic

1.6 Cleavage

Perfect {10 1 0}

Perfect on [1011]

1.7 Mohs Hardness

5.5-6

5-5.5

1.8 Chemical Composition

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

ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Afghanite and Smithsonite Chemical Formula

While comparing Afghanite and Smithsonite 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 Smithsonite 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 Smithsonite- ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

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Afghanite and Smithsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Smithsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Smithsonite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 4.00-4.65 whereas that of Smithsonite is 4.00-4.65.