Hemimorphite and Poudretteite Physical Properties

Hemimorphite

Poudretteite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.30-3.502.51-2.53

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

Conchoidal, Splintery

1.6 Cleavage

Perfect on {110}, poor on {101}, {001} rare

None

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Hemimorphite and Poudretteite Chemical Formula

While comparing Hemimorphite 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 Hemimorphite and Poudretteite chemical formula.

Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael 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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Hemimorphite and Poudretteite Specific Gravity

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