Azurmalachite and Goethite Physical Properties

Azurmalachite

Goethite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

HCl soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.70-3.95

4.27-4.29

1.5 Fracture

ConchoidalGemdat.org, Management Team (2012), ConchoidalGemdat.org, Management Team (2012)

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

1.6 Cleavage

1,1 basal.

Perfect {010}

1.7 Mohs Hardness

3.5-4

5-5.5

1.8 Chemical Composition

(Cu) 3(OH) 2(CO 3) 2 + Cu 2(CO 3)(OH) 2Gemdat.org , Management Team (2012)

FeO(OH)Arthur Thomas , Gemstones (2009)

Azurmalachite and Goethite Chemical Formula

While comparing Azurmalachite 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 Azurmalachite and Goethite chemical formula.

Chemical formula of Azurmalachite- (Cu) 3(OH) 2(CO 3) 2 + Cu 2(CO 3)(OH) 2Gemdat.org , Management Team (2012)
Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

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Azurmalachite and Goethite Specific Gravity

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