Look up: Cordierite

1. cordierite
   [n] - a blue mineral of magnesium and iron and aluminum and silicon and oxygen
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. Cordierite
   Cor'di·er·ite (kôr'dĭ*ẽr*īt) noun [ Named after the geologist Cordier .] (Min.) See Iolite .
   Found on 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 on http://wordnetweb.princeton.edu/perl/web
   
   
4. Cordierite
   • (n.) See Iolite.
   Found on http://thinkexist.com/dictionary/meaning
   
   
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 on http://www.britannica.com/eb/a-z/c/141
   
   
6. 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 on http://www.probertencyclopaedia.com/brow
   
   
7. 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 18-->).<ref name=Mindat/> A high temperature polymorph exists, indialite, which is isostructural with bery...
   Found on http://en.wikipedia.org/wiki/Cordierite