关键词: 地质特征, 成矿物质来源, 成矿温压条件, 成矿模式, 深部找矿

Abstract: In order to obtain the distribution situations,geochemical characteristics of the ore-body occurrence position,each deposits genetic types and its intrinsic relationships of the gold resources that is developed in the south broken altered fracture zone of Mozitan-Xiaotian volcanic basin,combing with the large number of geological exploration data and the technical methods of geological mapping,profile survey,systematic sampling,isotope samples collection and analysis and inclusion thermometry,the geological characteristics of the ore-bodies,ore-forming material source,ore-forming temperature and pressure conditions and metallogenic model of the gold resources in Wangjiachong-Langlingwang area are analyzed in detail,the results show that:①the contents of 34S of pyrite is -1.8‰～+2‰,it has the deep source characteristics of sulfur of lower crust or upper mantle,the composition characteristics of Pb isotope indicated that the most of the Pb is belongs to the deep source normal Pb；the ore-forming fluid is characterized by magmatic water mixed with a large number of meteoric water,the main homogenization temperature of quartz inclusions is 100～150 ℃,the explosion temperature is 300～350 ℃；the gold deposit is belongs to the middle-low temperature volcanic hydrothermal type gold deposits.②the metallogenic model of gold deposit is the initial formation of primary source bed,early preliminary enrichment of gold,along with the deep magmatic instrusion and eruption of the mesozoic Yanshan epoch,the remobilization,migration and enrichment of gold,the different mineralization types of gold deposit is formed ultimately.The above analysis results have some reference for the study of metallogenic conditions and ore deposit genesis,the establishment of metallogenic prediction model and deep gold deposit prospecting work.

Key words: Geogical characteristics, Ore-forming material source, Ore-forming temperature and pressure conditions, Metallogenic model, Deep prospecting