富集铊汞砷的生物是滥木厂铊矿床找矿和铊矿区污染的标志  

THE MARKES FOR THE PROSPECTING OF ORES AND THE INDICES FOR THE IDENTIFYING OF CONTAMINATION ARE THE HIGH CONTENTS OF Tl, Hg, As IN PLANTS AND ANIMALS IN THE LANMUCHANG Tl MINING DISTRICT

作　　者：张忠[1] 陈国丽[1] 张宝贵[1] 陈业材[1] 张兴茂[1] 

机构地区：[1]中国科学院地球化学研究所,贵阳550002

出　　处：《地质与勘探》2000年第5期27-30,共4页Geology and Exploration

基　　金：国家自然科学基金!( 4 95 710 63;4963 3 110 )资助项目

摘　　要：滥木厂铊矿区植物和动物中Tl、Hg、As含量变化总的趋势是以Hg最高 ,Tl次之 ,As最低为特点。它们明显受生物赖以生存的地质地球化学和生物地球化学环境制约 ,尤其是矿区水、土壤和岩、矿石中高背景Tl、Hg、As含量制约。矿区生物中Tl、Hg、As含量普遍高 ,尤其在矿体和矿化层部位的风化土壤中 ,植物的Tl、Hg、As含量异常高 ,不难看出 ,矿区生物中Tl、Hg、As含量的高低 ,不仅是判别矿区污染程度的标志 ,也是找矿 。The contents of Tl, Hg and As in plants and animals in the Tl mining district show such a general tendency of variation that Hg is highest, followed by Tl, and As is lowest. Their contents are obviously controlled by the geological - geochemical and biogeochemical environments in which living organisms live, especiallt by the high background values of Tl, Hg, As in water, soil and rock(and ore)in the Tl mining district. The contents of Tl, Hg and As in living organisms are generally high in the mining district, particularly in those plants growing in weathered soils developed in the locations where orebodies and mineralized beds occur the contents of Tl, Hg and As are abnormally high. It is not hard to see that the contents of Tl, Hg and As in living organisms in the mining district ate not only the indices for identifying the degree of contamination caused by Tl, Hg and As, but also the markers for the prospecting of ores, especially blind orebodies.

关 键 词：铊矿床 生物找矿标志 矿区污染标志 贵州 

分 类 号：P618.880.8[天文地球—矿床学]