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Marcasite
Marcasite

Langbeinite
Langbeinite



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Marcasite
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Langbeinite

Marcasite and Langbeinite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Slowly dissolves in water

Durability

-
-

Specific Gravity

4.80-4.90-9999
1 7.18
👆🏻

Fracture

Uneven
Conchoidal

Cleavage

{010} Indistinct
None

Mohs Hardness

6-6.53.5-4
2 10
👆🏻

Chemical Composition

FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
K2Mg2(SO4)3

Marcasite and Langbeinite Chemical Formula

While comparing Marcasite 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 Marcasite and Langbeinite chemical formula.

  • Chemical formula of Marcasite- FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Langbeinite- K2Mg2(SO4)3

Marcasite and Langbeinite Specific Gravity

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