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The formation of the giant Huayangchuan U-Nb deposit associated with carbonatite in the Qingling Orogenic Belt
Xue, Shuo1,9; Ling, Ming-Xing2; Liu, Yu-Long3; Kang, Qing-Qing4; Huang, Rui-Fang5; Zhang, Zhe-Kun1,9; Sun, Weidong6,7,8,9
2020-07-01
Source PublicationORE GEOLOGY REVIEWS
ISSN0169-1368
Volume122Pages:16
Corresponding AuthorLing, Ming-Xing(mxling@gig.ac.cn)
AbstractCarbonatitic magmatism plays a significant role in outgassing carbon from mantle and the formation of rare earth element (REE), rare metal (e.g., Nb and Th) and other types of deposits. The mechanism of REE mineralization associated with carbonatite have been widely studied. However, it is hard to understand U-Nb mineralization without Th enrichment associated with carbonatite. Here we report a carbonatite-hosted U-Nb deposit in Huayangchuan, located in the north Qinling Orogenic Belt. Field observation, mineralogy and geochemical analysis on a suite of drillhole samples were conducted to decipher the mineralization mechanism and its relationship with carbonatite. Huayangchuan carbonatite samples mainly consist of calcite and augite with small volume of accessory minerals (e.g., allanite, fluorapatite, barite and celestite). Betafite [(Ca,U)(2)(Ti,Nb,Ta)(2)O-6(OH)] is the major ore-bearing mineral in Huayangchuan deposit. The carbonatite shows high CaO, low MgO and alkali contents, which should be products to be differentiated from primary carbonatite (high MgO and alkali contents). The immiscibility and crystallization processes could explain the high CaO/(CaO + MgO + FeO) ratios and the enrichment of LILE. Numerical modeling also indicates positive delta O-18(SMOW) (7.29 to 15.53 parts per thousand) and negative delta C-13(PD)B (- 5.26 to -10.08 parts per thousand) shifts are induced by reduced sediments assimilation from source consistent with there being enriched Sr-Nd and low Mg isotopic compositions. LA-ICP-MS zircon U-Pb dating of Huayangchuan carbonatite yielded Triassic ages of 229 +/- 3 Ma, which corresponds to the post-collision stage of Qinling Orogen during the middle-late Triassic. We then proposed that the recycling of subducted sediments and later re-melting of those materials in shallow mantle generated the Huayangchuan carbonatite and subsequently formed the Huayangchuan deposit. Fluorine concentration decrease, caused by fluorapatite crystallization, ultimately resulted in betafite mineralization.
KeywordHuanyangchuan Qinling Orogenic Belt Carbonatite U-Nb deposit
DOI10.1016/j.oregeorev.2020.103498
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFC0602301] ; Sino Shaanxi Nuclear Industry Group ; Guangdong Natural Science Funds[2014A030306032] ; Guangdong Natural Science Funds[2015TQ01Z611] ; Youth Innovation Promotion Association CAS[2016315] ; GIGCAS
WOS Research AreaGeology ; Mineralogy ; Mining & Mineral Processing
WOS SubjectGeology ; Mineralogy ; Mining & Mineral Processing
WOS IDWOS:000537805900047
PublisherELSEVIER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/167637
Collection深海极端环境与生命过程研究中心
Corresponding AuthorLing, Ming-Xing
Affiliation1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China
2.East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China
4.Team 224 Sino Shaanxi Nucl Ind Grp, Xian 710100, Peoples R China
5.Southern Univ Sci & Technol, SUSTech Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China
6.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanog, Qingdao 266071, Peoples R China
7.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266237, Peoples R China
8.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
9.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Xue, Shuo,Ling, Ming-Xing,Liu, Yu-Long,et al. The formation of the giant Huayangchuan U-Nb deposit associated with carbonatite in the Qingling Orogenic Belt[J]. ORE GEOLOGY REVIEWS,2020,122:16.
APA Xue, Shuo.,Ling, Ming-Xing.,Liu, Yu-Long.,Kang, Qing-Qing.,Huang, Rui-Fang.,...&Sun, Weidong.(2020).The formation of the giant Huayangchuan U-Nb deposit associated with carbonatite in the Qingling Orogenic Belt.ORE GEOLOGY REVIEWS,122,16.
MLA Xue, Shuo,et al."The formation of the giant Huayangchuan U-Nb deposit associated with carbonatite in the Qingling Orogenic Belt".ORE GEOLOGY REVIEWS 122(2020):16.
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