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Goethite
Goethite

Apatite
Apatite



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Goethite
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Apatite

Goethite and Apatite Physical Properties

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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)
 
-
-
-
3.16-3.23
Conchoidal, Uneven, Conchoidal to uneven
[0001] indistinct, [1010] indistinct
5
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Goethite and Apatite Chemical Formula

While comparing Goethite and Apatite 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 Apatite chemical formula.

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Goethite and Apatite Specific Gravity

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