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Cordierite
Cordierite

Ludlamite
Ludlamite



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Cordierite
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Ludlamite

Cordierite and Ludlamite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
2.57-2.66
Subconchoidal, Conchoidal
Fair on {100}, poor on {001} and {010}
7-7.5
Mg2Al4Si5O18
 
-
-
-
3.1-3.2
-
Vitreous, pearly on cleavage
3-4
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Cordierite and Ludlamite Chemical Formula

While comparing Cordierite and Ludlamite 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 Ludlamite chemical formula.

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Cordierite and Ludlamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite Vs Ludlamite during the identification of gemstone. Specific gravity of Cordierite is whereas that of Ludlamite is .