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Jet
Jet

Jacobsite
Jacobsite



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Jet
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Jacobsite

Jet and Jacobsite Physical Properties

Jet
Jet
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Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

1.19-1.354.76-5.03
1 7.18
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Fracture

ConchoidalWalter Schumann
Conchoidal

Cleavage

None
None

Mohs Hardness

2.5-45.5-6.5
2 10
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Chemical Composition

C
(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Jet and Jacobsite Chemical Formula

While comparing Jet and Jacobsite 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 Jet and Jacobsite chemical formula.

  • Chemical formula of Jet- C
  • Chemical formula of Jacobsite- (Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Jet and Jacobsite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jet and Jacobsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jet and Jacobsite Optical Properties during the identification of gemstone. Specific gravity of Jet is 4.76-5.03 whereas that of Jacobsite is 4.76-5.03.