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Zoisite
Zoisite

Cordierite
Cordierite



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Zoisite
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Cordierite

Zoisite and Cordierite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.20-3.50
2.57-2.66
1.5 Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Even
Subconchoidal, Conchoidal, Brittle
1.6 Cleavage
Perfect {010} imperfect {100}
Fair on {100}, poor on {001} and {010}
1.7 Mohs Hardness
6-7
7-7.5
1.8 Chemical Composition
Ca2Al3(SiO4)3(OH)
Mg2Al4Si5O18

Zoisite and Cordierite Chemical Formula

While comparing Zoisite 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 Zoisite and Cordierite chemical formula.

  • Chemical formula of Zoisite- Ca2Al3(SiO4)3(OH)
  • Chemical formula of Cordierite- Mg2Al4Si5O18

Zoisite and Cordierite Specific Gravity

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