Spessartine and Cordierite Physical Properties

Spessartine

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

4.12-4.18

2.57-2.66

1.5 Fracture

ConchoidalArthur Thomas, Conchoidal, Brittle

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

{???} Distinct

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

1.7 Mohs Hardness

7-7.5

1.8 Chemical Composition

Mn 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Mg2Al4Si5O18

Spessartine and Cordierite Chemical Formula

While comparing Spessartine 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 Spessartine and Cordierite chemical formula.

Chemical formula of Spessartine- Mn 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Cordierite- Mg2Al4Si5O18

Compare Red Gemstones

Spessartine Vs Tourmaline

Spessartine Vs Tortoiseshell

Spessartine Vs Triplite

Spessartine and Cordierite Specific Gravity

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