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Metallogenetic targets and prospect analyses of the Wujiagou copper-gold deposit , Shanxi province(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2004年第01期
Page:
13-16,28
Research Field:
Publishing date:

Info

Title:
Metallogenetic targets and prospect analyses of the Wujiagou copper-gold deposit , Shanxi province
Author(s):
YANG Yin-chuan; YAO Jing-xuan
Shanxi Institute of Geophysical and Geochemical Exploration , Shanxi Yuncheng 044004 , China
Keywords:
Wujiagou ore field; metallogenetic target; prospect analysis
PACS:
P618.51
DOI:
-
Abstract:
Certain known Cu-Au deposits aroundWujiagou show an advantageous geological setting for metallogenesis in this area .Yet the ore fields lack the layered skarn type of Cu-Au deposits controlled by the shearing-zones .It is thus significant to target this type of mineral deposits that are not exposed or at depth through geochemical and geophysical methodologies.The exposed strata in the Wujiagou ore filed belong to the Sushui Group of Archaean age and the Zhongtiao Group of Proterozoic age , consisting mainly of gneisses, granitoids and marbles.The occurrence of granitoids and mineral deposits is primarily controlled by three EW-orientated ductile-shearing zones and one NS-striking compressingshearing fault belt.The Wujiagou diorite porphyries , shaped as a strip, extend in NE and dip toward SE.The NE-striking Cu-Au metallogenetic belt is hosted by the impure marbles of the Yuyuanxia Formation and controlled by shearing zone III , according with the occurrence of the poly-metallic mineralization skarn zone .Cu-Au mineralization disseminated or as veinlets is distributed in skarns.Polarization anomalies of the mineralized skarn are in large scale and manifest high intensity and the apparent gradient and center , suggesting that the polarized bodies generally plunge toward SW.This corresponds to the fact that intense Cu anomalies mark the NE part of the geochemical anomalies , whereas the SW part is only identified by related halo elements.Consequently , there is a large scale of Cu-Au deposit at depth inWujiagou.

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Memo

Memo:
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Last Update: 2004-03-20