Hydrothermal Alteration, Mineralization, and Structural Geology of the Zijinshan High-Sulfidation Au-Cu Deposit, Fujian Province, Southeast Chinaстатья из журнала
Аннотация: Research Article| June 01, 2019 Hydrothermal Alteration, Mineralization, and Structural Geology of the Zijinshan High-Sulfidation Au-Cu Deposit, Fujian Province, Southeast China Jing Chen; Jing Chen 1Centre for Ore Deposit and Earth Sciences (CODES), University of Tasmania, Hobart, Tasmania, Australia2Transforming the Mining Value Chain (TMVC), ARC Industrial Transformation Research Hub, University of Tasmania, Hobart, Tasmania, Australia †Corresponding author: e-mail, Jing.Chen@utas.edu.au Search for other works by this author on: GSW Google Scholar David R. Cooke; David R. Cooke 1Centre for Ore Deposit and Earth Sciences (CODES), University of Tasmania, Hobart, Tasmania, Australia2Transforming the Mining Value Chain (TMVC), ARC Industrial Transformation Research Hub, University of Tasmania, Hobart, Tasmania, Australia Search for other works by this author on: GSW Google Scholar José Piquer; José Piquer 3Instituto de Ciencias de la Tierra, Universidad Austral de Chile, Edificio Pugín, Av. Eduardo Morales Miranda, Valdivia, Chile Search for other works by this author on: GSW Google Scholar David Selley; David Selley 1Centre for Ore Deposit and Earth Sciences (CODES), University of Tasmania, Hobart, Tasmania, Australia Search for other works by this author on: GSW Google Scholar Lejun Zhang; Lejun Zhang 1Centre for Ore Deposit and Earth Sciences (CODES), University of Tasmania, Hobart, Tasmania, Australia2Transforming the Mining Value Chain (TMVC), ARC Industrial Transformation Research Hub, University of Tasmania, Hobart, Tasmania, Australia Search for other works by this author on: GSW Google Scholar Noel C. White Noel C. White 1Centre for Ore Deposit and Earth Sciences (CODES), University of Tasmania, Hobart, Tasmania, Australia4Ore Deposits and Exploration Centre (ODEC), Hefei University of Technology, Hefei, China Search for other works by this author on: GSW Google Scholar Author and Article Information Jing Chen 1Centre for Ore Deposit and Earth Sciences (CODES), University of Tasmania, Hobart, Tasmania, Australia2Transforming the Mining Value Chain (TMVC), ARC Industrial Transformation Research Hub, University of Tasmania, Hobart, Tasmania, Australia David R. Cooke 1Centre for Ore Deposit and Earth Sciences (CODES), University of Tasmania, Hobart, Tasmania, Australia2Transforming the Mining Value Chain (TMVC), ARC Industrial Transformation Research Hub, University of Tasmania, Hobart, Tasmania, Australia José Piquer 3Instituto de Ciencias de la Tierra, Universidad Austral de Chile, Edificio Pugín, Av. Eduardo Morales Miranda, Valdivia, Chile David Selley 1Centre for Ore Deposit and Earth Sciences (CODES), University of Tasmania, Hobart, Tasmania, Australia Lejun Zhang 1Centre for Ore Deposit and Earth Sciences (CODES), University of Tasmania, Hobart, Tasmania, Australia2Transforming the Mining Value Chain (TMVC), ARC Industrial Transformation Research Hub, University of Tasmania, Hobart, Tasmania, Australia Noel C. White 1Centre for Ore Deposit and Earth Sciences (CODES), University of Tasmania, Hobart, Tasmania, Australia4Ore Deposits and Exploration Centre (ODEC), Hefei University of Technology, Hefei, China †Corresponding author: e-mail, Jing.Chen@utas.edu.au Publisher: Society of Economic Geologists Accepted: 25 Mar 2019 First Online: 24 Jun 2019 Online Issn: 1554-0774 Print Issn: 0361-0128 © 2019 Economic GeologyEconomic Geology Economic Geology (2019) 114 (4): 639–666. https://doi.org/10.5382/econgeo.4657 Article history Accepted: 25 Mar 2019 First Online: 24 Jun 2019 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Jing Chen, David R. Cooke, José Piquer, David Selley, Lejun Zhang, Noel C. White; Hydrothermal Alteration, Mineralization, and Structural Geology of the Zijinshan High-Sulfidation Au-Cu Deposit, Fujian Province, Southeast China. Economic Geology 2019;; 114 (4): 639–666. doi: https://doi.org/10.5382/econgeo.4657 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyEconomic Geology Search Advanced Search Abstract Zijinshan is a world-class Au-Cu district located in southwest Fujian Province, southeast China. It contains a diverse array of ore deposits hosted by the Zijinshan granite complex and surrounding volcano-sedimentary rocks. Associated deposits include high-sulfidation epithermal gold-copper, intermediate-sulfidation epithermal polymetallic silver-base metal, and porphyry molybdenum-copper deposits. The Zijinshan high-sulfidation Au-Cu deposit is located in the middle of the Zijinshan district, and ore zones are hosted in, below, and adjacent to the Zijinshan lithocap. The host rocks are part of a Jurassic granite complex emplaced between 165 and 157 Ma. 40Ar/39Ar age spectra of hydrothermal alunite indicate that hydrothermal activity at Zijinshan occurred at 102.86 ± 0.61 to 101.19 ± 0.60 Ma and was associated with dacite porphyry dikes that intruded at 104.8 ± 0.9 Ma.Hydrothermal activity produced pervasive silicic and advanced argillic alteration assemblages that are zoned from a central, massive quartz alteration domain, outward to massive quartz-dickite, disseminated quartz-alunite ± dickite, and disseminated quartz-muscovite-dickite zones. Copper sulfides occur in hydrothermally cemented breccias, veins, and minor disseminations in granite; copper minerals include covellite, digenite, and minor enargite. Oxide Au ores are associated with strongly weathered silicic alteration in the upper parts of the deposit.A set of subvertical NE-striking faults were active prior to mineralization at Zijinshan. During mineralization, a NW-striking fault system controlled the emplacement of veins, breccias, and dacite dikes. Kinematic indicators show that most of the NW-striking faults were active as normal oblique faults during mineralization. Postmineralization ENE-striking dextral strike-slip faults are associated with minor conjugate NNW-striking faults.The premineralization structures at Zijinshan likely formed during NW-directed compression. Synmineralization structures formed under subvertical contraction and subhorizontal NNE-plunging extension. Postmineralization structures developed in a strike-slip regime defined by a NW-oriented axis of compression and NE-trending axis of extension. Changes in the styles of pre- and synmineralization structures are related to fluctuations in the regional stress regime. The transition from compression to extension was fundamental to mineralization. Postmineralization faults are related to transient local stress regime variations at the deposit scale. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Год издания: 2019
Авторы: Jing Chen, David R. Cooke, José Piquer, D Selley, Lejun Zhang, Noel C. White
Источник: Economic Geology
Ключевые слова: Geological and Geochemical Analysis, Geochemistry and Geologic Mapping, earthquake and tectonic studies
Другие ссылки: Economic Geology (HTML)
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Том: 114
Выпуск: 4
Страницы: 639–666