Akademik

kobellite
\\ˈkōbəˌlīt\ noun (-s)
Etymology: Swedish kobellit, from Franz von Kobell died 1882 German mineralogist and poet + Swedish -it -ite
: a mineral Pb2(Bi,Sb)2S5 consisting of a blackish gray sulfide of antimony, bismuth, and lead

Useful english dictionary. 2012.