Cordierite and Clinozoisite Physical Properties

Cordierite

Clinozoisite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.57-2.663.21-3.38

1 7.18

1.5 Fracture

Subconchoidal, Conchoidal, Brittle

Irregular/uneven, Uneven

1.6 Cleavage

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

Perfect on {001}

1.7 Mohs Hardness

7-7.56-7

2 10

1.8 Chemical Composition

Mg2Al4Si5O18

Ca 2Al 3(SiO 4) 3(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Cordierite and Clinozoisite Chemical Formula

While comparing Cordierite and Clinozoisite 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 Cordierite and Clinozoisite chemical formula.

Chemical formula of Cordierite- Mg2Al4Si5O18
Chemical formula of Clinozoisite- Ca 2Al 3(SiO 4) 3(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Compare Blue Gemstones

Cordierite Vs Riebeckite

Cordierite Vs Rosasite

Cordierite Vs Plumbogummite

Cordierite and Clinozoisite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Clinozoisite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Clinozoisite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 3.21-3.38 whereas that of Clinozoisite is 3.21-3.38.