CONTRASTING PARENTAL MAGMA COMPOSITIONS FOR THE HONGGE AND PANZHIHUA MAGMATIC Fe-Ti-V OXIDE DEPOSITS, EMEISHAN LARGE IGNEOUS PROVINCE, SW CHINA

• DOI: 10.2113/econgeo.109.6.1763
• Publication Date: 2014-07-09T17:58:10Z
• Authors: Z.-J. Bai; H. Zhong; C. Li; W.-G. Zhu; D.-F. He; L. Qi
• Keywords: Large igneous province

Research Article| September 01, 2014 CONTRASTING PARENTAL MAGMA COMPOSITIONS FOR THE HONGGE AND PANZHIHUA MAGMATIC Fe-Ti-V OXIDE DEPOSITS, EMEISHAN LARGE IGNEOUS PROVINCE, SW CHINA* Zhong-Jie Bai; Bai 1State Key Laboratory of Ore Deposit Geochemistry, Institute Chinese Academy Sciences, Guiyang 550002, China Search for other works by this author on: GSW Google Scholar Hong Zhong; Zhong † †Corresponding author: e-mail, [e-mail] Chusi Li; Li 2Department Geological Indiana University, Bloomington, 47405 Wei-Guang Zhu; Zhu De-Feng He; He Liang Qi Economic Geology (2014) 109 (6): 1763–1785. https://doi.org/10.2113/econgeo.109.6.1763 Article history received: 29 Jul 2013 accepted: 03 Jan first online: 09 Mar 2017 Cite View This Citation Add to Manager Share Icon MailTo Twitter LinkedIn Tools Get Permissions Site Bai, Zhong, Li, Zhu, He, Qi; CHINA. 2014;; doi: Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Dropdown Menu input auto suggest filter your All ContentBy SocietyEconomic Advanced Abstract Many ~260 Ma mafic-ultramafic layered intrusions, including Hongge and Panzhihua, in the Emeishan large igneous province, southwestern host world-class oxide ore deposits. These two most important ore-bearing intrusions show differences lithology mineral chemistry. The orebodies intrusion occur as concordant layers middle part intrusion, closely associated with clinopyroxenites. Titanomagnetite Mg-rich ilmenite are major minerals deposit. Coexisting clinopyroxene contains >1.7 wt % TiO2. data indicate high Ti parental magma In Panzhihua also but its lower instead part. contrast deposit, rocks deposit gabbros, not addition, is rare titanomagnetite predominant <1.6 contrasting lithologic compositions that has higher TiO2 than from deposits their magmas different MgO/FeO trace element ratios well. Calculations using average experimental Mg-Fe exchange coefficient partition coefficients between more fractionated mantle-normalized patterns magma. estimated lithologies resemble Longzhoushan-type basalts Ertan-type intermediate respectively. new study, together available Sr-Nd isotope literature, support a petrogenetic model involving selective assimilation newly subducted, stagnant oceanic gabbroic slab above deep-seated mantle plume. process subsequent contamination upper crust played an role variation magmatic Abundant Fe-Ti less evolved basaltic province elsewhere world attributed lithospheric ascending plume-derived picritic was originally undersaturated oxides. You do have access content, please speak institutional administrator if you feel should access.