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Global Geology 2013, 16(2) 68-74 DOI:
ISSN: 1673-9736 CN: 22-1371/P |
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Mineralization enrichment regularity of gold deposit in Shangzhuang��northwestern Jiaodong |
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QI Caisong and ZHANG Yuan |
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College of Earth Sciences��Jilin University��Changchun 130061��China |
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Abstract��
Shangzhuang gold deposit located in the Wangershan fault zone of northwestern Jiaodong is of mesohypogenic altered rock type�� The ore bodies occur at the hanging wall and footwall of Wangershan fault in vein or irregular shapes with the NE strike��NW trend��30° --60° in dip and the lateral trending of SW�� The ores are composed of pyrite��quartz��sericite��bismuthinite��native gold��bismuth sulfosalt minerals��chalcopyrite��etc����shown as brecciated structure and vein structure with metasomatic dissolution textures�� The wall rock alteration is mainly described as phyllic alteration and silicification�� The mineralization of this deposit is controlled by structure and altered rocks�� The ore-controlling fault structures of this deposit is Wangershan fault��of which the intersection of major fault and secondary fault is the main ore-bearing position of this gold deposit��and the larger arc curved position is a favorable part for ore body occurrence�� On the plane��the ore body is shown as equidistant pinch-out reproduction�� |
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Keywords��
deposit characteristics
ore-controlling regularity
Shangzhuang gold deposit
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