河南嵩县画匠沟金矿化区土壤地球化学异常特征及成矿预测

Soil geochemical anomaly characteristics and mineralization prediction of Huajianggou gold mineralization zone in Song County of Henan

运用土壤地球化学测量方法,在河南省嵩县画匠沟金矿化区开展1∶1万土壤地球化学测量。通过相关性分析和因子分析,显示Ag、Pb、Zn、Sb、Cd显著相关,属于一组中、低温元素组合,表明区内发生一期或多期中、低温亲硫元素富集过程。Au与Ag、Pb、Zn、As、Cd呈正相关,指示区内Au的富集的同时,伴随Ag、Pb、Zn等中低温元素的富集,但相关系数较小,可能受多期叠加的影响。在统计分析基础上,结合成矿地质条件和综合地球化学异常,在区内圈定6处成矿靶区,通过路线地质调查和工程查证,在研究区的中部和东部,发现两条NW向含银铅锌多金属矿构造蚀变带,表明区内除金矿外,还具有较大的银铅锌多金属矿找矿潜力。

The soil geochemical survey of 1∶10000 scale is carried out in Huajianggou gold mineralization area, Song County, Henan Province. Through correlation analysis and factor analysis, it is shown that Ag, Pb, Zn, Sband Cd are significantly correlated, belonging to a group of medium and low temperature element combination, which indicates that one or more enrichment process of medium and low temperature chalcophile elements have occurred in the area. Au is positively correlated with Ag, Pb, Zn, Asand Cd, indicating that the enrichment of Au in the area is accompanied by the enrichment of medium and low temperature elements such as Ag, Pband Zn. But the correlation coefficient is weak, which may be affected by multi-phase superposition. On the basis of statistical analysis, combined with metallogenic and geological condition and comprehensive geochemical anomalies, six metallogenic target areas are delineated in the area. After route geological survey and engineering verification, two NW-trending structural alteration zones of silver-lead-zinc polymetallic mineralization are found in the middle and eastern parts of the study area. It indicates that there is a great prospecting potential for silver-lead-zinc polymetallic mineralization in addition to gold mineralizationin the area.