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Gold Science and Technology ›› 2014, Vol. 22 ›› Issue (2): 1-6.doi: 10.3969/j.issn.1005-2518.2014.02.001

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Research on Genesis and Prospecting Indicators of Gold Deposits in Madagascar

YANG Xi’an1,LIU Shanbao1,ZHAO Xiandong2   

  1. 1.Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing   100037,China;
    2.Shandong Zhengyuan Institute of Geological Exploration,Yantai   264002,Shandong,China
  • Received:2013-11-29 Revised:2014-02-17 Online:2014-04-28 Published:2014-08-26

Abstract:

The gold deposit in the Madagascar is a classical quartz vein type gold deposit,the gold mineralization developed in the quartz vein and its wall rock.The gold deposit is intersected by major NNW trending shear zones and east-trending fracture sets,gold mineralization is associated with Pan-African orogeny.In the Pan-African orogeny,there are intensive tectonic-magmatic in Madagascar,results partial melting of the lower crust,a large amount of fluids and granitic magma are formed.In the process of the ascent of the fluids,mixed shallow-sourced meteoric fluid,the ore-forming fluids would have entered the favourable faults,resulting in mineralization.

Key words: gold deposit, Pan-African orogeny, auriferous quartz veins, Archean, banded iron formation, greenstone belt, Madagascar

CLC Number: 

  • P618.51

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