四川杨柳坪Cu-Ni-PGE矿田区域地球化学异常特征  

CHARACTERISTICS OF REGIONAL GEOCHEMICAL ANOMALIES IN THE YANGLIUPING Cu-Ni-PGE DEPOSIT, SICHUAN PROVINCE

作　　者：赵传冬[1] 成杭新[1] 庄广民[1] 刘应汉[1] 陈德友[2] 

机构地区：[1]中国地质科学院地球物理地球化学勘查研究所,廊坊065000 [2]四川地质调查院,成都610084

出　　处：《地质与勘探》2005年第5期53-57,共5页Geology and Exploration

基　　金：国家重点基础研究发展规划项目(编号:G1999045707);国土资源大调查项目(编号:F.8.1.3;200120130090)资助

摘　　要：在杨柳坪Cu-N i-PGE矿田进行的1∶20万水系沉积物测量表明,该矿床区域地球化学异常的指示元素有:Pt、Pd、Cr、N i、Cu、Co、Ag、Cd、Sb、Pb和Zn,异常具有空间分带特征,即:从矿床向外的异常元素依次为Pd、Pt-Cr、N i-Co、Cu-Cd、Ag-Zn-Pb、Sb。因此在筛选1∶20万区域化探异常时,不但要考虑成矿元素的异常强度和规模,而且还要考虑其它指示元素的异常强度和规模。同时也说明1∶20万水系沉积物测量可作为铂矿区域普查的有效方法。A stream sediment surveying with scale 12D0000 for the platinum group elements （PGE） deposits was conducted. The results shows that the indicator elements in the Yangliuping Cu - Ni - PGE deposit are Pt, Pd, Cr, Ni, Cu, Co, Ag, Cd, Sb, Pb and Zn. The sequence of horizontal zoning of those geochemical anomalies from ores to wallrocks is from Pd, Pt - Cr, Ni - Co, Cu - Cd, Ag - Zn - Pb to Sb. This study also shows that the stream sediment surveying with scale of 1200000 is an effective method for delineating the PGE regional geochemical anomalies in the stage of regional reIt should take into not only anomaly intensity and size of mineralization elements, but also other indicator elements during screening regional geochemical anomalies of Pt and Pd

关 键 词：区域地球化学特征 异常筛选 铂族元素 杨柳坪 

分 类 号：P623[天文地球—地质矿产勘探]