冯家山夕卡岩型铁铜矿床水化学异常特征及找矿标志  

CHARACTERISTICS OF HYDROCHEMICAL ANOMALIES AND PROSPECTING CRITERIA OF THE FENGJIASHAN SKARN Fe-Cu DEPOSIT

作　　者：蒋敬业[1] 谭大芳[1] 胡国俊 张丽春 

机构地区：[1]中国地质大学

出　　处：《地质与勘探》1998年第6期5-9,共5页Geology and Exploration

基　　金：地质行业基金

摘　　要：冯家山夕卡岩型铁铜矿床水化学异常清晰，衬度高，最有效的找矿指标是Ｃｕ２＋和ＳＯ２－４，其次是Ｍｏ４＋、Ｚｎ２＋和Ａｇ＋。对于夕卡岩型矿床，ｐＨ值无异常，没有明显的指示意义。研究表明，亚热带气候条件下，由于温度高、雨量多，促进了硫化物的氧化而补偿了降雨的稀释作用。因此，水化学方法是十分有效的找矿方法。The hydrochemical anomalies of the Fengjiashan skarn Fe-Cu deposit are characterized by high contrast. Cu 2+ and SO 2- 4 are the most effective indicators for geochemical prospecting, while Mo 4+ ,Zn 2+ and Ag + take the second place. pH shows no anomaly and has no significant meaning for skarn deposit.The research indicates that under the condition of subtropic region, owing to the abundant rainfall and the high temperature , the promoted oxidation of sulfides can compensate the dilution by rain. The hydrochemical prospecting serves as an effective prospecting method which may not be affected by dry or rainy season.

关 键 词：水化学找矿 铜矿床 亚热带 铁矿床 找矿标志 

分 类 号：P618.310.8[天文地球—矿床学] P618.410.8[天文地球—地质学]