金在地壳、岩石和沉积物中的丰度  

Abundance of gold in crust, rocks and sediments

作　　者：迟清华[1] 

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,河北廊坊065000

出　　处：《地球化学》2002年第4期347-353,共7页Geochimica

基　　金：国家重点研究发展规划项目(G1999043215);原地质矿产部重点基础地质研究项目(8502212)

摘　　要：金在地壳、岩石和沉积物中的丰度一直是地球化学研究和金矿勘查中非常重要的参数。随着20世纪80年代金分析测试技术的突破性进展以及目前积累的大量可靠的金的分析数据,发现引用20世纪70年代前发表的有关金的地壳丰度和金在岩石、沉积物中的平均含量作为衡量标准已不适宜。根据近15年来发表的大量有关金在地壳、岩石和沉积物中含量的文献,结合作者在地壳与岩石研究中积累的金的大量可靠数据,综合给出金的地壳丰度为1.0ng/g,出露地壳丰度为0.8ng/g,金在岩石、火成岩、沉积岩和变质岩中的平均含量分别为0.9、0.6、1.0和1.0ng/g,金在中国水系沉积物、泛滥平原沉积物、浅海沉积物和土壤中的平均含量分别为1.4、1.6、1.2和2.0ng/g。这种对金在地壳、岩石和沉积物中丰度值的新认识,对地球化学理论研究、勘查地球化学甚至金的矿产勘查工作都有重大的意义。The gold abundance in crust, rocks and sediments is an important parameter in geochemistry and gold exploration. Along with the breakthrough of the analytical techniques of gold in 1980s and the accumulation of a huge amount of reliable analytical data of gold at present, it is found that it is not suitable now to quote the gold abundance in crust, rocks and sediments published before 1970s as evaluating criterion. According to the literatures about the gold contents in crust, rocks and sediments published in recent 15 years and a huge amount of reliable analytical data in the study about crust and rocks accumulated, it is recommended that the gold abundance in the crust and in the exposed crust are 1.0 and 0.8 ng/g, the average contents of gold in rocks, igneous rocks, sedimentary rocks and metamorphic rocks are 0.9, 0.6, 1.0 and 1.0 ng/g, the average contents of gold in stream sediments, flood plain sediments, shallow sea sediments and soils in China are 1.4, 1.6, 1.2 and 2.0 ng/g, respectively. These greatly improve the gold abundance in the crust, rocks and sediments, and these have an immense practical meaning for theoretical geochemistry, exploration geochemistry and mine exploration of gold.

关 键 词：金 丰度 地壳 岩石 土壤 沉积物 中国 火成岩 变质岩 沉积岩 

分 类 号：P578.11[天文地球—矿物学]