河南栾川地区陈南沟钼矿区土壤地球化学异常的 特征与评价

陈南沟钼矿区位于东秦岭钼矿带栾川矿集区内，地处栾川断裂南侧，属北秦岭褶皱系。将矿区成矿地质环境与土壤地球化学特征结合，利用地质累积指数对研究区内的土壤地球化学元素组合进行评价，综合分析后圈出找矿有利靶区，并对靶区进行了野外检查和工程验证。研究结果表明：陈南沟钼矿属于与老君山花岗岩体有关的热液矿床，燕山期红岩寨花岗岩体边部及其外接触带是钼矿化富集的有利部位，北东向小型构造对辉钼矿的形成起到一定的控制作用。本次工作完善了与花岗岩基有关的热液矿床研究，对栾川矿集区内进一步的找矿工作具有一定的指导意义。

Characteristics and evaluation of soil geochemical anomalies of the Chennangou Mo deposit in Luanchuan County,Hennan Province

Located in the Luanchuan ore concentration area of the East Qinling molybdenum belt, the Chennangou molybdenum deposit lies on the south side of Luanchuan fault and belongs to the North Qinling fold system. Combining ore-forming geological environment in the ore district with soil geochemical characteristics, the authors evaluated the soil geochemical element association in the area by using the index of geoaccumulation. On the basis of a comprehensive analysis, favorable exploration targets were delineated, and field inspection and engineering verification were carried out. The results show that the Chennangou molybdenum deposit is a hydrothermal deposit related to Laojunshan granite rock, and both the edge and the outer contact zone of Yanshanian Hongyanzhai granite rock are favorable positions of molybdenum enrichment. In addition, the small NE-trending structure played a certain role in the formation of molybdenum ore. This study not only improves the research on the hydrothermal deposit related to granite rock but also has some significance for further exploration in the Luanchuan ore concentration area.