云南广南地区微细粒浸染型金矿成矿条件及找矿潜力  

Metallogenic Conditions and Prospecting Potential of Disseminated Gold Deposits at the Guangnan Area of Southeastern Yunnan Province

作　　者：龙鹏[1] 贺强 莫佳 龙航 杨晔 LONG Peng;HE Qiang;MO Jia;LONG Hang;YANG Ye(Guangxi Geological Exploration Institute of China Metallurgical Geology Bureau,Nanning,Guangxi 530022)

机构地区：[1]中国冶金地质总局广西地质勘查院,广西南宁530022

出　　处：《地质与勘探》2019年第S01期357-364,共8页Geology and Exploration

基　　金：中国地质调查局公益性基础地质调查项目(编号:DD20160032)资助。

摘　　要：微细浸染型金矿是我国华南低温成矿域的重要矿床类型之一,尤其集中产在扬子地块西南缘晚古生代、中生代弧后裂陷盆地,该地域素有滇黔桂“金三角”之称。近年来,随着地质勘探工作的不断深入,滇黔桂“金三角”地区新发现老寨湾金矿、堂上金矿、斗月金矿、峨里金矿、细掌金矿等一批金矿床,亟需开展成矿条件综合研究,分析成矿潜力,明确找矿方向。本文在完成云南省广南地区1∶5万矿产地质调查的基础上,对该地区典型的金矿床(点)进行详细地质调查,并结合地球物理和地球化学异常信息,分析该区微细浸染型金成矿条件,圈定了3处找矿远景区,为地质找矿开创新局面。Disseminated gold deposits are one of the most important deposit types in low-temperature metallogeny domain of SW China.Especially noteworthy is that most of these deposits occur predominantly in the Late Paleozoic and Mesozoic back-arc basins along the southwestern margin of the Yangtze Craton,forming the famous Dian-Qian-Gui gold triangle.With the continuing geological prospecting in recent years,many new deposits including the Laozhaiwan,Tangshang,Douyue,Eli and Xihang deposits have been discovered.It is thus urgent to comprehensively analyze the metallogenic conditions of these newly discovered deposits,which will shed light on the mineralization potential and prospecting orientation of the region.On the basis of the geology and mineralization survey at a scale of 1∶50000,we carried out a systematic evaluation on the geology,geophysics and geochemical anomalies of the Guangnan area.The metallogenic conditions of disseminated gold deposits have been discussed.We also selected three potential prospecting areas for further investigation.

关 键 词：微细粒浸染型金矿 成矿条件 找矿潜力 广南地区 云南 

分 类 号：P618[天文地球—矿床学]