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Goethite and Sugilite Physical Properties


Sugilite and Goethite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
HCl soluble   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
4.27-4.29   
2.69-2.79   

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

Cleavage
Perfect {010}   
Poor on {0001}   

Mohs Hardness
5-5.5   
5.5-6.5   

Chemical Composition
FeO(OH)Arthur Thomas , Gemstones (2009)   
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Goethite and Sugilite Chemical Formula

While comparing Goethite and Sugilite 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 Goethite and Sugilite chemical formula.

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Goethite and Sugilite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Goethite and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Goethite and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Goethite is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.

Brown Gemstones

Brown Gemstones


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