COMPARATIVE ANALYSIS OF ISOTOPE GEOCHEMICAL CHARACTERISTICS OF GOLD DEPOSITS OF LIXIAN-MINXIAN METALLOGENIC BELT IN WESTERN QINLING OF GANSU PROVINCE

LiXian-Minxian metallogenic belt of Western-Qinling have good mineral-forming have good mingeral-forming condition and great prospection potenital.The comparative analysis results of four Gold Deposits's aurum and it's associated elements,isotope elements(sulfure,oxygen,carbon and hydrogen),trace elements,REE and the fluid inclusions indicate that the ore-forming materials maily come from the Upper Paleozoic sedimentary rock(most from Liba Group),and the mineralizing fluids water is mainly rainwater,less magmatic and metamorphic water take part in the mineralizing processes in the early time.Besides Zhongchuan igneous rocks,other four igneous rocks have tes same mingeral-forming condition,so after further studying,there will have some new discovery.