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Goethite
Goethite

Mexican fire opal
Mexican fire opal



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Goethite
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Mexican fire opal

Goethite and Mexican fire opal Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
HCl soluble
-
4.27-4.29
Uneven
Perfect {010}
5-5.5
FeO(OH)Arthur Thomas , Gemstones (2009)
 
-
-
-
-9999
-
None
-9999
SiO2·nH2O

Goethite and Mexican fire opal Chemical Formula

While comparing Goethite and Mexican fire opal 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 Mexican fire opal chemical formula.

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Goethite and Mexican fire opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Goethite and Mexican fire opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Goethite Vs Mexican fire opal during the identification of gemstone. Specific gravity of Goethite is whereas that of Mexican fire opal is .