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Genesis of the Kaladawan Fe-Mo ore field in Altyn, Xinjiang, China: Constraints from mineralogy and geochemistry
Cheng-Ming Wang; Li Zhang; Hao-Shu Tang; Hua-Yong Chen; Xi-Liang Li; Yi Zheng; Deng-Feng Li; Jing Fang; Lian-Hui Dong; Xun Qu
2017
发表期刊Ore Geology Reviews
卷号81期号:2页码:587-601
摘要

The Kaladawan Fe-Mo ore field in Altyn (Xinjiang Province, NW China) contains six Fe (-Mo) deposits, with total proven reserves of 60 Mt Fe and 10,000 t Mo. Tabular, lensoidal and stratiform orebodies occur in the Cambrian foliated marble, phyllite, carbonaceous slate, chlorite-sericite schist and quartz-sericite schist along the exocontact zone of the Kaladawan granite. Skarns are extensively developed and dominated by garnet, pyroxene, epidote, tremolite and actinolite, with minor chlorite, zoisite, quartz and calcite. Ore minerals are mainly magnetite and molybdenite. Five alteration and mineralization stages (I-V) were identified: the prograde (I) and retrograde (II) skarns are characterized by assemblages of garnet-pyroxene and epidote-tremolite-actinolite, respectively, intruded and replaced by mineral assemblages of magnetite-epidote-zoisite (III), quartz-sulfides (IV) and calcite-chlorite (V) in younging order. The Kaladawan garnet contains more andradite (61.2-94.4 mol%) than grossularite (37.5-5.0 mol%). Pyroxene is Mg-rich and Fe-poor, with an endmember range of 55.4-94.7 mol% diopside and 42.5-4.7 mol% hedenbergite. Amphibole comprises mainly tremolite and actinolite. The Kaladawan skarn mineral contents resemble typical skarn Fe and Mo deposits. In-situ LA-ICP-MS magnetite trace element analysis had identified unusually high Mg, Mo and Cr concentrations. The high Mo and the absence of molybdenite inclusions in magnetite suggest that the hydrothermal fluids may have been Mo-rich. The magnetite also contains similar (Ti + V) and (Al + Mn) values with typical skarn Fe deposits. Therefore, the Kaladawan Fe-Mo mineralization is best attributed to be skarn-type, and related to the Kaladawan granite intrusion. 

关键词Kaladawan Fe–mo Ore Field Altyn Mountains Magnetite Geochemistry Metallogeny Nw China
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/8195
专题矿床地球化学国家重点实验室
作者单位1.Key Laboratory of Metallogenic Dynamics, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
4.Xinjiang Bureau of Geology and Mineral Resources Exploration and Development, Urumqi 830000, China
5.Guangdong Provincial Key Lab of Geological Processes and Mineral Resource Survey, Sun Yat-sen University, Guangzhou 510275, China
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GB/T 7714
Cheng-Ming Wang,Li Zhang,Hao-Shu Tang,et al. Genesis of the Kaladawan Fe-Mo ore field in Altyn, Xinjiang, China: Constraints from mineralogy and geochemistry[J]. Ore Geology Reviews,2017,81(2):587-601.
APA Cheng-Ming Wang.,Li Zhang.,Hao-Shu Tang.,Hua-Yong Chen.,Xi-Liang Li.,...&Xun Qu.(2017).Genesis of the Kaladawan Fe-Mo ore field in Altyn, Xinjiang, China: Constraints from mineralogy and geochemistry.Ore Geology Reviews,81(2),587-601.
MLA Cheng-Ming Wang,et al."Genesis of the Kaladawan Fe-Mo ore field in Altyn, Xinjiang, China: Constraints from mineralogy and geochemistry".Ore Geology Reviews 81.2(2017):587-601.
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