Magnesite and Goethite Physical Properties

Magnesite

Goethite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Effervesces in hot HCl

HCl soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.92-3.124.27-4.29

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

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

1.6 Cleavage

[10 1 1] perfect

Perfect {010}

1.7 Mohs Hardness

3.5-4.55-5.5

2 10

1.8 Chemical Composition

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

FeO(OH)Arthur Thomas , Gemstones (2009)

Magnesite and Goethite Chemical Formula

While comparing Magnesite 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 Magnesite and Goethite chemical formula.

Chemical formula of Magnesite- MgCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

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Magnesite and Goethite Specific Gravity

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