Gahnite and Hemimorphite Physical Properties

Gahnite

Hemimorphite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

4.00-4.623.30-3.50

1 7.18

1.5 Fracture

Conchoidal, Uneven

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

1.6 Cleavage

Indistinct parting on [111]

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

1.7 Mohs Hardness

7.5-85

2 10

1.8 Chemical Composition

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Gahnite and Hemimorphite Chemical Formula

While comparing Gahnite and Hemimorphite 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 Gahnite and Hemimorphite chemical formula.

Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Gahnite and Hemimorphite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnite and Hemimorphite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Hemimorphite Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 3.30-3.50 whereas that of Hemimorphite is 3.30-3.50.