A Administratively, the study area is located in the village of Mumbulsari,District Tempurejo, Jember, Java province east and Location of research is geographically located at coordinates 113 ° 47 '41.104 "E - 113 ° 46' 19.399" E and08 ° 18 '2.059 "LS - 08 ° 20 '27.958 "LS. The method of research is data collection surface, petrographic analysis, analysis of ASD Teraspect mineragraphy and analysis obtained from the company, the research area is divided into two units, namelygeomorphology geomorphology unit residual volcanic hills harjomulyo and geomorphology unit undulating terrain curahtakir foot volcano. while for the stratigraphy is divided into three lithologies are sorted from old to young is volcanicbreccia rock unit and units intrusion of andesite and the geological structure in the area of research in the form of a curahtakir sinistral strike slip, based on the set ofminerals that are found in areas of research, there are three alteration zones are zonesof alteration zones Chlorite - epidote - carbonate - quartz (propylitic) alteration zone zone illite – smectite – quartz (argillic) and zones of alteration zones piropilit -kaolinite - dickite - diaspor (advanced argilic). In the research area of the mineralizedzone having an identifier in the form lithocap high-sulfidation epithermal deposition with sulfide minerals such as pyrite, magnetite and vuggy quartz.