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Brookite
Brookite

Cordierite
Cordierite



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Brookite
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Cordierite

Brookite and Cordierite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.87-4.142.57-2.66
Amber
1 7.18
1.5 Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Subconchoidal, Conchoidal, Brittle
1.6 Cleavage
Poor on {120}, in traces on {001}
Fair on {100}, poor on {001} and {010}
1.7 Mohs Hardness
5.5-67-7.5
Amber
2 10
1.8 Chemical Composition
TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Mg2Al4Si5O18

Brookite and Cordierite Chemical Formula

While comparing Brookite 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 Brookite and Cordierite chemical formula.

  • Chemical formula of Brookite- TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Cordierite- Mg2Al4Si5O18

Brookite and Cordierite Specific Gravity

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