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Goethite
Goethite

Herderite
Herderite



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Goethite
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Herderite

Goethite and Herderite 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)
 
-
-
-
2.90-3.02
Subconchoidal, Conchoidal
Indistinct on {110}
5-5.5
CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Goethite and Herderite Chemical Formula

While comparing Goethite and Herderite 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 Herderite chemical formula.

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Goethite and Herderite Specific Gravity

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