黑龙江省额尔古纳地块战略性矿产锑区域地球化学特征及远景区预测  

Regional geochemical characteristics and metallogenic prospect area prediction of strategic mineral antimony in the Eerguna block,Heilongjiang Province,China

作　　者：万太平 张丽 刘汉粮[3] WAN Tai-Ping;ZHANG Li;LIU Han-Liang(Natural Resources Survey Institute of Heilongjiang Province,Harbin150036,China;Heilongjiang Institute of Geophysical and Geochemical Explo-ration,Harbin150036,China;Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China)

机构地区：[1]黑龙江省自然资源调查院,黑龙江哈尔滨150036 [2]黑龙江省地球物理地球化学勘查院,黑龙江哈尔滨150036 [3]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000

出　　处：《物探与化探》2023年第5期1179-1188,共10页Geophysical and Geochemical Exploration

基　　金：中国地质科学院地球物理地球化学勘查研究所项目(基[2010]矿评03-03-05、基[2010]矿评03-03-06、基[2008]增01-12-22)。

摘　　要：中国是世界上锑矿资源最丰富的国家,但近年来随着开采强度增大,锑矿资源优势面临巨大挑战。额尔古纳地块成矿地质条件优越,是黑龙江省重要的成矿区,因此了解锑在额尔古纳地块的地球化学特征至关重要。本文依托额尔古纳地块1∶25万水系沉积物测量数据,探讨水系沉积物中锑在不同构造单元内的地球化学参数及区域地球化学异常特征。结果显示:全区锑元素中位值和平均值分别是0.33×10^(-6)和0.55×10^(-6);漠河前陆盆地中锑中位值和平均值高于全区锑含量,是锑元素富集区;锑高值区、强高值区主要分布于漠河前陆盆地中;根据85%累积频率,圈定出66个锑地球化学异常,其中2个锑地球化学异常达到地球化学省规模;已发现的金、锑、铅等矿床或矿(化)点均有明显的锑地球化学异常;根据锑、砷、金地球化学异常的空间分布特征及成矿地质条件,初步划分了3个成矿远景区,分别为北极村—三连山锑成矿远景区、王苏山—大岭锑成矿远景区、白卡鲁山—呼中锑成矿远景区。本次研究圈定的锑、砷、金地球化学异常和成矿远景区,为该区寻找金、锑、铅等硫化物矿床提供了重要依据。The Eerguna block with metallogenic geological conditions is an important metallogenic area in Heilongjiang Province.Glob-ally,China boasts the richest resource of antimony.However,the high mining intensity in recent years imposes huge challenges to this resource advantage of China.In this context,it is necessary to ascertain the geochemical characteristics of antimony in the Eerguna block.Based on the data of the 1∶250000 stream sediment survey in the Eerguna block,this study explored the geochemical parame-ters of antimony in different tectonic units and the regional geochemical anomalies of this block.The results show that the study area has median and average concentrations of antimony of 0.33×10^(-6) and 0.55×10^(-6),respectively.The Mohe foreland basin is rich in an-timony,with median and average concentrations of antimony higher than those of the study area.Furthermore,zones with high and ex-tremely high antimony concentrations in the study area are distributed primarily in the Mohe foreland basin.Based on the 85%cumula-tive percentage,this study determined 66 geochemical anomalies of antimony,among which two reach the scale of geochemical prov-inces.Furthermore,this study identified significant geochemical anomalies of antimony in the discovered gold,antimony,and plum-bum deposits or ore occurrences(mineralization points).Based on the spatial distributions of geochemical anomalies and metallogenic geological conditions of antimony,arsenic,and gold,this study delineated three metallogenic prospect areas of antimony:the Beijicun-Sanlianshan metallogenic prospect area,the Wangsushan-Daling metallogenic prospect area,and the Baikalushan-Huzhong metallogenic prospect area.In addition,the geochemical anomalies and metallogenic prospect areas for antimony,arsenic,and gold provide impor-tant areas for searching for sulfide deposits such as gold,antimony,and plumbum ones in the study area.

关 键 词：锑 额尔古纳地块 水系沉积物 地球化学参数 地球化学异常 成矿远景区 

分 类 号：P632[天文地球—地质矿产勘探]