蚀变围岩指示元素铝钾锡在党河南山金区域成矿预测中的作用  

THE ROLE OF THE INDICATOR ELEMENTS Al, K AND Sn FOR WALL ROCK ALTERATION IN THE REGIONAL GOLD ORE PROGNOSIS OF THE DANGHENANSHAN MOUNTAIN AREA

作　　者：何进忠[1] 

机构地区：[1]中国地质大学

出　　处：《物探与化探》2005年第1期1-4,9,共5页Geophysical and Geochemical Exploration

摘　　要：偏碱性花岗岩及与金的成矿活动有关的硅化、粘土化蚀变是黑刺沟金矿田规模金矿床存在的地质前提。铝、钾、锡应是黑刺沟金矿田的蚀变围岩指示元素,其更客观地反映了区域内的金的主要成矿远景区;但该元素组合仅适用于干旱荒漠区及部分以机械风化、搬运作用为主的高寒山区等水系沉积物采样粒度较粗的地区。Alkalescent granites and gold-related silication and argillation are geological prerequisites for the formation of noticeable gold deposits. Al, K and Sn are indicator elements for ore prospecting work in the Heicigou gold orefield and reflect rather objectively main ore prospect areas in the region. Nevertheless, such an element association is only suitable for arid and desert areas and high and cold mountain areas mainly characterized by mechanic weathering and transportation where coarse-grained stream sediment samples are collected.

关 键 词：蚀变围岩 指示元素 铝、钾、锡 金矿 区域成矿预测 甘肃党河南山 

分 类 号：P632[天文地球—地质矿产勘探]