title: Geochemical studies of natural graphites by INAA determined trace element concentrations.
abstract: An attempt to characterize natural graphites by their trace element content is reported. Ten samples of graphite of known deposits over the world are classified by their graphitization indices, ranging from 0.26 to 1.00, and analyzed for trace elements content. Results of neutron activation analysis of 28 evaluated elements, i.e. Na, Rb, Cs, Th, U, Cr, Fe, Co, As, Sb, Ag, Au, Se, Te, Zn, Hg, Zr, Hf, Ta, Sc, La, Ce, Nd, Sm, Eu, Tb,Yb and Lu, are presented and briefly discussed.
authors.affiliation: Faculty of Energy and Fuels, AGH - University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland.
authors.forename: Jerzy
authors.initials: J
authors.lastname: Janczyszyn
authors.affiliation: Faculty of Geology, Geophysics and Environmental Protection, AGH - University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland.
authors.forename: Barbara
authors.initials: B
authors.lastname: Kwiecińska
keywords: Activation analysis; Graphite; Graphitization index; Trace elements