Hemimorphite and Goethite Physical Properties

Hemimorphite

Goethite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

HCl soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.30-3.504.27-4.29

1 7.18

1.5 Fracture

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

Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).

1.6 Cleavage

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

Perfect {010}

1.7 Mohs Hardness

55-5.5

2 10

1.8 Chemical Composition

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

FeO(OH)Arthur Thomas , Gemstones (2009)

Hemimorphite and Goethite Chemical Formula

While comparing Hemimorphite and Goethite 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 Goethite 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 Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

Compare Green Gemstones

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Hemimorphite and Goethite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hemimorphite and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hemimorphite and Goethite Optical Properties during the identification of gemstone. Specific gravity of Hemimorphite is 4.27-4.29 whereas that of Goethite is 4.27-4.29.