块状硫化物矿床的地球化学找矿标志  

GEOCHEMICAL INDICATORS FOR EXPLORING MASSIVE SULFIDE DEPOSITS

作　　者：王登红[1] 

机构地区：[1]中国地质科学院研究生部

出　　处：《地质科技情报》1994年第2期80-86,共7页Geological Science and Technology Information

摘　　要：近年来国外发现了许多大型块状硫化物矿床，而我国进展还不大。原因之一是我们对这类矿床的地质特征、成矿条件尤其是找矿标志研究还不够。这是一类成矿物质通过热渡作用在海底沉积而成的特殊矿床，故在找矿勘探时既要研究沉积成矿时形成的原生晕，又要研究热液经过围岩时蚀变而产生的次生晕。Ｍｎ晕、Ｔｌ、Ｈｇ、Ｂａ、Ａｇ和Ｚｎ等元素的异常，络合剂元素的富集，微量元素的分布，铅同位素，岩石化学异常指数尤其是块状硫化物Ｃｕ矿中Ｍｇ的富集和Ｎａ的贫化，都是实用的地球化学找矿标志。Many massive sulfide deposits that have been found abroad were formed by deposition of sulfides from hydrothermal system on the sea floor,and combined with sedimentation and alteration. Therefore,both primary halo in strata and secondary halo in altered rocks surroundtng the ore deposits are useful and should be studied. Mn halo ,anomaly of T1 ,Ba ,Hg ,As and Zn, enrichment of complex anions, distribution feature of minor mineralization elements,Co/Ni ratio of pyrite, lead isotope and ,especially,the adding of Mg and leaching of Na in massive sulfide Cu deposits ,are practical indicators for exploring massive sulfide deposits.

关 键 词：铜矿床 硫化物矿床 地球化学 找矿 

分 类 号：P618.410.8[天文地球—矿床学]