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Goethite
Goethite

Langbeinite
Langbeinite



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Goethite
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Langbeinite

Goethite and Langbeinite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

HCl soluble
Slowly dissolves in water

Durability

-
-

Specific Gravity

4.27-4.29-9999
1 7.18
👆🏻

Fracture

Uneven
Conchoidal

Cleavage

Perfect {010}
None

Mohs Hardness

5-5.53.5-4
2 10
👆🏻

Chemical Composition

FeO(OH)Arthur Thomas , Gemstones (2009)
K2Mg2(SO4)3

Goethite and Langbeinite Chemical Formula

While comparing Goethite and Langbeinite 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 Langbeinite chemical formula.

  • Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
  • Chemical formula of Langbeinite- K2Mg2(SO4)3

Goethite and Langbeinite Specific Gravity

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