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Cordierite
Cordierite

Langbeinite
Langbeinite



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Cordierite
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Langbeinite

Cordierite and Langbeinite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
Slowly dissolves in water

Durability

-
-

Specific Gravity

2.57-2.66-9999
1 7.18
👆🏻

Fracture

Subconchoidal, Conchoidal
Conchoidal

Cleavage

Fair on {100}, poor on {001} and {010}
None

Mohs Hardness

7-7.53.5-4
2 10
👆🏻

Chemical Composition

Mg2Al4Si5O18
K2Mg2(SO4)3

Cordierite and Langbeinite Chemical Formula

While comparing Cordierite 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 Cordierite and Langbeinite chemical formula.

  • Chemical formula of Cordierite- Mg2Al4Si5O18
  • Chemical formula of Langbeinite- K2Mg2(SO4)3

Cordierite and Langbeinite Specific Gravity

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