Pdf Institut Fr Mineralogie
November 2012, freiberg 1213 sandmann d, haser s, gutzmer j 2012 characterization of graphite ores and concentrates by sembased image analysischriftenr deutsch ges geowiss 80 397, abstracts of lectures and posters geohannover th sandmann d, seifert th, gutzmer j 2012 antimony deposits and the worldwide sb mine production.