Gahnospinel and Cordierite Physical Properties

Gahnospinel

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

3.65-4.552.57-2.66

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

None, but may exhibit slight parting

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

1.7 Mohs Hardness

7.5-87-7.5

2 10

1.8 Chemical Composition

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

Mg2Al4Si5O18

Gahnospinel and Cordierite Chemical Formula

While comparing Gahnospinel 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 Gahnospinel and Cordierite chemical formula.

Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Cordierite- Mg2Al4Si5O18

Compare Blue Gemstones

Gahnospinel Vs Jeremejevite

Gahnospinel Vs Hydrogrossular

Gahnospinel Vs Indicolite Blue Tourmaline

Gahnospinel and Cordierite Specific Gravity

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