Jacobsite and Cordierite Physical Properties

Jacobsite

Cordierite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.76-5.032.57-2.66

1 7.18

1.5 Fracture

Conchoidal, Brittle

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

None

Fair on {100}, poor on {001} and {010}

1.7 Mohs Hardness

5.5-6.57-7.5

2 10

1.8 Chemical Composition

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

Mg2Al4Si5O18

Jacobsite and Cordierite Chemical Formula

While comparing Jacobsite and Cordierite 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 Jacobsite and Cordierite chemical formula.

Chemical formula of Jacobsite- (Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Cordierite- Mg2Al4Si5O18

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Jacobsite and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jacobsite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jacobsite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Jacobsite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.