1. 
   nagyag-ite
   <chemical> A mineral of blackish lead-gray colour and metallic luster, generally of a foliated massive structure; foliated tellurium. It is a telluride of lead and gold. ... Origin: So called from Nagyag, in Transylvania. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?nagyag-ite
   
   
2. 
   Nagyagite
   Nag'yag·ite noun [ So called from Nagyag , in Transylvania.] (Min.) A mineral of blackish lead-gray color and metallic luster, generally of a foliated massive structure; foliated tellurium. It is a telluride of lead and gold.
   Found op http://www.encyclo.co.uk/webster/N/1
   
   
3. 
   Nagyagite
   • (n.) A mineral of blackish lead-gray color and metallic luster, generally of a foliated massive structure; foliated tellurium. It is a telluride of lead and gold. • (n.) A mineral of blackish lead-gray color and metallic luster, generally of a foliated massive structure; foliated telluri...
   Found op http://thinkexist.com/dictionary/meaning/nagyagite/
   
   
4. 
   Nagyagite
   Nagyagite (Pb5Au(Te,Sb)4S5-8) is a rare sulfide mineral with known occurrence associated with gold ores. Nagyagite crystals are opaque, monoclinic and dark grey to black coloured. It was first described in 1845 for an occurrence at the type locality of the Nagyag mine, Sacarîmb, Hunedoara, Romania...
   Found op http://en.wikipedia.org/wiki/Nagyagite
   
   

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