滇东南底圩金矿地质特征及找矿预测

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Geological features and ore prediction of Dixu gold deposit in southeast Yunnan Province, China

LIU Ji-shun¹,ZHOU Yu-guo,HAN Hai-tao,GAO Qi-zhi²,LIN Jia-yong^1，2,LIU De-li¹,GUO Jun¹

1.School of Postgraduate, Central South University, Changsha 410083, China;2.Geophysical and Geochemical Exploration Team, Yunnan Geology and Mineral Resources Bureau, Kunming 652100, China;3.Longxing Mining Industry Limited Company in Wenshan, Guangnan,Yunnan 663300, China

Received:2006-09-26 Revised:1900-01-01 Online:2007-07-26 Published:2007-07-26
Contact: LIU Ji-shun

Abstract

Abstract: Dixu gold deposit is one of the unusual medium-large-scaled gold deposits discovered in Southeast Yunnan Province, in which As and Au are closely associated. Genetically, the deposit belongs to epithermal (mesothermal) super fine-grained contaminated gold deposit. Based on the geological features, the genesis and the controlling factors of the deposit are discussed: (1)Dixu gold deposit is one of the gold deposits occurring as belts along Wenshan-Funing thrust nappe structure, which is the key controlling factor for gold deposits while short-axial anticline is one of the best locations for gold mineralization and short-axial anticlines are the favorite location for ore bodies; (2)Ermeishan basalt with joints, cracks, and pores are the most important ore-hosting rocks; (3)Rather trapped environment with low temperature is the necessary physical environment for the formation of epithermal (mesothermal) fine-grained disseminated gold deposits. The direction of exploration has been discussed and forecast in outer and deeper areas of this deposit.

Key words: geological features, ore prediction, Southeast Yunnan Province, Dixu gold deposit

CLC Number:

P618.51

LIU Ji-shun,ZHOU Yu-guo,HAN Hai-tao,GAO Qi-zhi,LIN Jia-yong,LIU De-li,GUO Jun. Geological features and ore prediction of Dixu gold deposit in southeast Yunnan Province, China[J].J4, 2007, 37(4): 652-0658.

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