1. 
   nacrite
   clay mineral, a form of kaolinite [Al2Si2O5(OH)4] (q.v.).[2 related articles]
   Found op http://www.britannica.com/eb/a-z/n/1
   
   
2. 
   Nacrite
   Nacrite Al2Si2O5(OH)4 is a clay mineral that is a polymorph (or polytype) of kaolinite. It crystallizes in the monoclinic system. X-ray diffraction analysis is required for positive identification. Nacrite was first described in 1807 for an occurrence in Saxony, Germany. The name is from nacre in r...
   Found op http://en.wikipedia.org/wiki/Nacrite
   
   
3. 
   nacrite
   1) Clay mineral
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/nacrite/1
   
   

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