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Goethite
Goethite

Pleonaste
Pleonaste



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Goethite
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Pleonaste

Goethite and Pleonaste Physical Properties

Physical Properties

Tenacity

-
-

Solubility

HCl soluble
-

Durability

-
-

Specific Gravity

4.27-4.293.80
1 7.18
👆🏻

Fracture

Uneven
-

Cleavage

Perfect {010}
Indistinct

Mohs Hardness

5-5.58
2 10
👆🏻

Chemical Composition

FeO(OH)Arthur Thomas , Gemstones (2009)
(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

Goethite and Pleonaste Chemical Formula

While comparing Goethite and Pleonaste 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 Pleonaste chemical formula.

  • Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
  • Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

Goethite and Pleonaste Specific Gravity

Another important criteria for qualitative analysis of gemstones is Goethite and Pleonaste Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Goethite and Pleonaste Optical Properties during the identification of gemstone. Specific gravity of Goethite is 3.80 whereas that of Pleonaste is 3.80.