Chinese Acad Sci, Res Ctr Mineral Resources Explorat, Beijing 100101, Peoples R China
; Chinese Acad Sci, Inst Geol, Beijing 100029, Peoples R China
; Chinese Acad Sci, Inst High Energy Phys, Beijing 100817, Peoples R China
; Beijing Univ Sci & Engn, Beijing 100083, Peoples R China
Neutron activation analysis after preconcentration of nickel sulfide fire assay was used in measurement of Ru, Ph, Pd, Os, Ir, Pt (i.e. PGE elements) and Au concentrations for basalt, mantle and granulite xenoliths in Hannuoba. The chondrite- and primitive mantle-normalized PGE patterns generally exhibit flat (for Iherzolite), negative slope (for harzburgite), and positive slope (for basic granulite and basalt). In addition, strong it negative anomaly occurs in basalt and granulite xenolith, and little negative anomaly also exists in Iherzolite xenolith in Hannuoba.