甘肃北山斜沟—红柳丘井地区土壤地球化学特征及找矿远景  

Soil geochemical characteristics and mineral exploration prospects in Xiegou-Hongliuqiujing Area,Beishan,Gansu Province

作　　者：范宗福 徐沛斌 魏万鸿 张旭 Fan Zongfu;Xu Peibin;Wei Wanhong;Zhang Xu(The Fourth Geological and Mineral Exploration Institute of Gansu Provincial Geological and Mineral Exploration and Development Bureau)

机构地区：[1]甘肃省地质矿产勘查开发局第四地质矿产勘查院

出　　处：《黄金》2024年第6期77-84,共8页Gold

基　　金：甘肃省自然资源厅省地勘基金项目(甘财资环[2022]62号);甘肃省自然资源厅基础地质调查项目(甘国土资勘发[2017]64号)。

摘　　要：在斜沟—红柳丘井地区开展1∶50 000土壤测量,采集样品5 625件,粒度为4目至20目。通过样品加工分析和地球化学参数统计,对成矿元素地球化学特征进行研究,圈定单元素异常467处、组合异常3类、综合异常17处。根据异常查证评价情况对综合异常进行了分类及排序。在此基础上,结合区域地质背景、矿产资源分布情况,划分了以Au、Pb、Zn、W、Mo为主的找矿远景区5处,初步评价了其成矿潜力,指出具有找矿潜力的矿床类型为斑岩型钼矿床、蚀变岩型金矿床、火山热液型金矿床。1∶50000 soil survey was conducted in the Xiegou-Hongliuqiujing Area and a total of 5625 samples were collected,with sampling sizes from 4 mesh to 20 mesh.Through sample processing analysis and geochemical parameter statistics,the geochemical characteristics of ore-forming elements were studied.A total of 467 single-element anomalies,3 types of combined anomalies,and 17 comprehensive anomalies were identified.Based on the anomaly veri-fication and evaluation,the comprehensive anomalies were classified and sorted.Based on the above,combined with the regional geological background and distribution of mineral resources,the research area has been divided into 5 prospecting prospect areas mainly composed of Au,Pb,Zn,W,and Mo,and their ore-forming potential has been preliminarily evaluated.It is believed that there are prospecting potentials for porphyry type molybdenum deposits,altered rock type gold deposits,and volcanic hydrothermal type gold deposits.

关 键 词：地球化学特征 斑岩型钼矿床 蚀变岩型金矿床 火山热液型金矿床 找矿远景区 斜沟—红柳丘井地区 

分 类 号：TD15[矿业工程—矿山地质测量] P632[天文地球—地质矿产勘探]