商洛市商州区三岔河一带1∶2.5万土壤测量地球化学特征及找矿效果  

Geochemical characteristics and prospecting effect of 1∶25000 soil survey in Sanchahe area,Shangzhou District,Shangluo City

作　　者：张嘉升 李伟良 谢晋 ZHANG Jiasheng;LI Weiiang;XI Jin(Sino Shaanxi Nuclear Industry Group Geological Survey Co.,Ltd.,Xi′an 710100,Shaanxi,China;Northwest Nonferrous Engineering Co.,Ltd.,Xi′an 710038,Shaanxi,China)

机构地区：[1]中陕核工业集团地质调查院有限公司,陕西西安710100 [2]西北有色工程有限责任公司,陕西西安710038

出　　处：《资源信息与工程》2023年第3期24-30,共7页Resource Information and Engineering

摘　　要：通过商洛市商州区三岔河一带1∶2.5万土壤测量地球化学特征研究,确定研究区内Mo、Au为主成矿元素,Mo-Cu-W-Zn为钼矿的指示元素组合,Au-Ag-Pb为金矿的指示元素组合。Mo空间分布相对集中,受花岗斑岩体空间位置及展布形态控制;Au空间分布相对分散,受岩浆热液活动影响,沿北西向断裂、岩体与围岩接触带分布。以Mo为主成矿元素圈定4个综合异常,HS9综合异常内发现辉钼矿点3处,具有较好的斑岩型钼矿找矿潜力;以Au为主成矿元素圈定11个综合异常,HS13综合异常内发现矿化点1处,具有较好的构造蚀变型金矿找矿潜力。Through the study of geochemical characteristics of 1∶25,000 soil survey in Sanchahe area,Shangzhou District,Shangluo City,it is determined that Mo and Au are the main ore-forming elements in the study area.Mo-Cu-W-Zn is the indicator element combination of molybdenum deposit,and Au-Ag-Pb is the indicator element combination of gold deposit.The spatial distribution of Mo is relatively concentrated,which is controlled by the spatial position and distribution shape of granite porphyry.The spatial distribution of Au is relatively scattered,influenced by magmatic hydrothermal activity,and distributed along the NW-trending fault zone and the contact zone between rock mass and surrounding rock.Four comprehensive anomalies are delineated with Mo as the main metallogenic element,and three molybdenite spots are found in HS9 comprehensive anomaly,which has good prospecting potential for porphyry molybdenum deposits.Au is the main ore-forming element to delineate 11 comprehensive anomalies,and one mineralization spot is found in HS13 comprehensive anomaly,which has good prospecting potential for structural altered gold deposits.

关 键 词：土壤测量 地球化学特征 找矿效果 钼矿 金矿 三岔河 

分 类 号：P631[天文地球—地质矿产勘探]