青海龙尾沟铜、金矿床地质特征、矿床成因及成矿远景分析  

GEOLOGIC CHARACTERISTIC, GENESIS AND PERSPECTIVE ANALYSIS OF LONGWEIGOU PORPHYRY COPPER AND GOLD DEPOSIT, QINGHAI PROVINCE

作　　者：徐善法[1] 张汉成[1] 陈建平[1] 叶树民[2] 

机构地区：[1]中国地质大学,北京100083 [2]中国地质科学院地球物理地球化学勘查研究所,廊坊065000

出　　处：《地质与勘探》2004年第2期12-17,共6页Geology and Exploration

基　　金：青海省计委项目资助。

摘　　要：龙尾沟铜、金矿床是在青海省柴北缘成矿亚区内所取得的重大找矿突破,该矿床产于下元古界达肯大坂群(Pt1dk)地层内,并受F6断裂破碎带控制。通过对矿床地质特征、矿石及花岗斑岩脉地球化学特征研究,首次提出龙尾沟铜、金矿床是与岩浆作用有关的斑岩型矿床。从已查明铜、金矿床(体)的控矿因素和矿化特征分析,深部存在规模较大矿化体的前景,应进一步加强该地区深部勘探及研究力度,以期获得找矿的更大突破。The finding of the Longweigou copper and gold deposit is a great prospecting breakthrough in the northern Qaidam metallogenic sub-province, Qinghai Province. The deposit is located in Lower Proterozoic Dakendaban formation, and controlled by F6 fault fracture zone. Based on geological and geochemical characteristic of ores and granitic porphyry, it is firstly concluded that Longweigou copper and gold deposit is a porphyry type deposit related with magmatism. According to known ore-controlling factors and mineralizing characteristics, there exist bigger mineralizing bodies in the deep part of the deposit. More prospecting and investigating works should be done in order to achieve more breakthroughs in the area.

关 键 词：斑岩型铜矿 矿床地质 矿床成因 远景分析 龙尾沟 

分 类 号：P618.41[天文地球—矿床学] P618.51[天文地球—地质学]