the deposit was analyzed by electron probe microanalysis． The results showed that there were two different types of pyrite，the Co /Ni value of one type of pyrite was 0. 04 ～ 1. 68，with an average value of 0. 57，indicating sedimentary origin ( Co /Ni ＜ 1) ，the mineral was formed earlier and subsequently remolded by hydrothermal erosion． The other type of pyrite was with Co /Ni value of 0. 98 ～ 7. 67，and an average of 2. 46，indicating hydrothermal origin ( Co /Ni ＞ 1) ，which occurred in the main ore body，and was closely related to Pb--Zn mineralization． There are obvious differences in Fe content in sphalerite，which can be divided into ferric sphalerite ( 4% ～ 8%) and sphalerite ( ＜ 2%) ． It is speculated that it may be caused by the superimposed transformation of the mineralization process． The Zn /Cd in the sphalerite is 346 ～ 698，which belongs to medium and high temperature． The study of mineral typomorphic characteristics indicates that the deposit is a stratabound-magmatic hydrothermal origin．