Support for this study was received from the China National Ph.D.Foundations and from Prof.Yusheng Zhai of China University of Geosciences,also an Academician of the Chinese Academy of Sciences,and from Prof.Zhaolu Pan and Jianhong Zhang of China University of Geosciences in Beijing,who provided insightful discussions and critical reviews of this manuscript.The chemical analyses,electron microprobe tests,X-ray diffraction,pyroelectricity tests,and infrared spectroscopic analyses of the pyrites were carried out at the labs of the China University of Geosciences in Beijing,while the EPR test was performed in the lab of the Depart-ment of Physics,Peking University,China.The authors very much appreciate the time invested by Mr.S.Daly,P.Geo of APEGBC,Canada （）

Mr.M.Storey,M.Eng.and P.Eng.with APEGBC of Canada and by David Yin,BSc of USA,for their review and editorial work on this contribution. （）