Smithsonite and Poudretteite Physical Properties

Smithsonite

Poudretteite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.00-4.652.51-2.53

1 7.18

1.5 Fracture

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

Conchoidal, Splintery

1.6 Cleavage

Perfect on [1011]

None

1.7 Mohs Hardness

5-5.55

2 10

1.8 Chemical Composition

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

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Smithsonite and Poudretteite Chemical Formula

While comparing Smithsonite and Poudretteite 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 Smithsonite and Poudretteite chemical formula.

Chemical formula of Smithsonite- ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

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Smithsonite and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Smithsonite and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Smithsonite and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Smithsonite is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.