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Elbaite
Elbaite

Goethite
Goethite



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Elbaite
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Goethite

Elbaite and Goethite Physical Properties

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Physical Properties

Tenacity

-
-

Solubility

-
HCl soluble

Durability

-
-

Specific Gravity

2.90-3.104.27-4.29
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Uneven

Cleavage

Poor/indistinct on {1120} and {1011}
Perfect {010}

Mohs Hardness

75-5.5
2 10
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Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
FeO(OH)Arthur Thomas , Gemstones (2009)

Elbaite and Goethite Chemical Formula

While comparing Elbaite and Goethite 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 Elbaite and Goethite chemical formula.

  • Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
  • Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

Elbaite and Goethite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Elbaite and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Elbaite and Goethite Optical Properties during the identification of gemstone. Specific gravity of Elbaite is 4.27-4.29 whereas that of Goethite is 4.27-4.29.