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2015, 34(3) 624-638 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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Present status of mineral deposit system of metallogenic belt and problems remained in eastern Tianshan��Xinjiang |
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QIU Yin-Jiang, ZHANG Yuan-Hou |
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1�� Xinjiang Fund Management Center of Geological Exploration��Urumqi 830000��China; 2�� College of Earth Sciences��Jilin University��Changchun 130061��China |
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Abstract��
The eastern Tianshan metallogenic belt��located in eastern part of Tianshan orogenic belt��is one of most important metallogenic belts in northwestern China�� This paper presents its tectonic history�� metallogenic times and types of mineral deposits in the area�� Classic ore deposits��such as VMS ore deposits of Kalatage��Aqishan�� porphyritic ore deposits of Tuwu-Yandong�� Yuhai Cu-Mo (Au)�� Cu-Ni magmatic sulfide ore deposits of Baixintan and so on��are analyzed in metallogenic epoch��as well as their relationship with the history of Kangguer structural zone in temporal- spatial�� Through this��we think that the mineralization type and time of Tuwu-Yandong porphyry ore deposit have to be reexamined under the comparision with Shiyingtan epithermal gold deposit��Kangguer quartz vein gold deposit��Kangnan epithermal gold occurrence��Sanchakou porphyry Cu-Mo deposit and Huangshandong Cu-Ni magmatic sulfide ore deposit in the same tectonic belt�� The features of the first stage alteration in Weiquan silver and polymetallic deposit��Hongyuntan and Yamansu skarn Fe-Cu deposit are consistent with that of Aqishan VMS- type Cu-Zn deposit��suggesting the potential of ore-forming is the same with that of Aqishan Cu-Zn deposit in Yamansu volcanic island belt�� Aeromagnetic abnormities in the area west of Tuwu-Yandong deposit are identical with that of mafic- ultramafic complex of eastern Huangshan��suggesting mafic- ultramafic complex developed in the west area�� Above all��we suggest that the research of classic ore deposits be strengthened in mineralization type and epoch��as well as Permian granitoid and mafic- ultramafic complex around the Kangguer structural belt and the deep section of Yamansu metallogenic zone�� |
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Keywords��
Xinjiang
eastern Tianshan
tectonic
mineralization type
mineralization time
exploration breakthrough
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