1. 
   cordierite
   [n] - a blue mineral of magnesium and iron and aluminum and silicon and oxygen
   Found op http://www.webdictionary.co.uk/definition.php?query=cordierite
   
   
2. 
   Cordierite
   Cor'di·er·ite (kôr'dĭ*ẽr*īt) noun [ Named after the geologist Cordier .] (Min.) See Iolite .
   Found op http://www.encyclo.co.uk/webster/C/159
   
   
3. 
   cordierite
   noun a blue mineral of magnesium and iron and aluminum and silicon and oxygen; often used as a gemstone
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=cordierite
   
   
4. 
   Cordierite
   • (n.) See Iolite.
   Found op http://thinkexist.com/dictionary/meaning/cordierite/
   
   
5. 
   cordierite
   blue silicate mineral that occurs as crystals or grains in igneous rocks. It typically occurs in thermally altered clay-rich sediments surrounding ... [3 related articles]
   Found op http://www.britannica.com/eb/a-z/c/141
   
   
6. 
   Cordierite
   Cordierite (mineralogy) or iolite (gemology) is a magnesium iron aluminium cyclosilicate. Iron is almost always present and a solid solution exists between Mg-rich cordierite and Fe-rich sekaninaite with a series formula: ({Magnesium},{Iron})2{Aluminium|3}({Silicon|5}{Aluminium}{Oxygen|18}) to ({Ir...
   Found op http://en.wikipedia.org/wiki/Cordierite
   
   
7. 
   Cordierite
   Cordierite is found as an accessory mineral in granite, gneiss, schists, and in contact metamorphic zones. Transparent specimens of good colour have been used as a gem stone. It has the formulae Mg2Al4Si5O18 and a relative hardness of 8.
   Found op http://www.probertencyclopaedia.com/browse/HC.HTM
   
   
8. 
   cordierite
   1) Mineral
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/cordierite/1
   
   

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