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�� 2013, 32(1) 35-44 DOI: ISSN: 1004-5589 CN: 22-1111/P

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	PubMed
	Article by Wang, W. X. 1
	Article by Song, J. Z. 2
	Article by Cao, X. S. 3
	Article by Wei, L. M. 1
	Article by Wang, K. Y. 1

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Geological characteristics and ore genesis of Pengboshan gold deposit in Inner Mongolia

WANG Wen-Xu-1, SONG Jian-Zhong-2, CAO Xiao-Sheng-3, WEI Lie-Min-1, WANG Ke-Yong-1

1. College of Earth Sciences��Jilin University��Changchun 130061��China; 2. Chifeng Hongling Nonferrous Metal Mining Co�� Ltd��Chifeng 025420��Inner Mongolia��China; 3. Second Geological Mineral Exploration Institute��Linhe 015000��Inner Mongolia��China

Abstract: The Pengboshan gold deposit is a quartz vein deposit in type in Carboniferous lower grade metamophic rocks�� The gold-bearing quartz veins were controlled by the faults with different directions��and most of them were distributed in the contact zone between Hercynian diorite and Carboniferous strata�� Trace element analysis revealed that the gold content in diorite was higher than that in strata rocks��indicating that diorite might provide most of the ore-forming materials for gold deposit�� The study of fluid inclusion showed that CO2-bearing and aqueous two-phase fluid inclusions developed in quartz in main mineralization stages�� The homogenization temperature and salinity of fluid inclusions were 211�� 289�� and 4. 51 �� 5. 23 wt%NaCl in former type and 150�� 320�� and 2. 1 �� 5. 1 wt%NaCl in later type��respectively�� The results showed the ore-forming fluids as a medium-temperature�� and low salinity NaCl-CO2-H2O solution��which mainly came from diorite magmas�� Pengboshan gold deposit was a medium-temperature magma-related hydrothermal deposit produced in orogenic belt environment�� The Pengboshan gold deposit is some similar to the Mulongtao type gold deposit in metallogenic age��geological and fluidcharacteristics��

Keywords: Pengboshan gold deposit quartz vein type geological characteristics ore genesis Muruntao gold deposit

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1����, ·��, ��, ��, �Թ��.��ְ�ɽ��ۺ��Ϣ�ҿ�ģ��[J]. ��, 2010,29(1): 71-77

2��Դ��ϣ��ѧ.��ɹ��Ŭ��ɽͭ��ҿ��[J]. ��, 2010,29(2): 234-239

3��Գ��Σ��룬��.��ĥʯɽͭ��о�[J]. ��, 2010,29(2): 240-247