Genesis of Two Different Types of Gold Mineralization in the Linglong Gold Field, China: Constrains from Geology, Fluid Inclusio
Ore Geology Reviews 65 (2015) 643–658 Contents lists available at ScienceDirect Ore Geology Reviews journal homepage: www.elsevier.com/locate/oregeorev Genesis of two different types of gold mineralization in the Linglong gold field, China: Constrains from geology, fluid inclusions and stable isotope Bo-Jie Wen a,Hong-RuiFana,⁎,M.Santoshb, Fang-Fang Hu a,FrancoPirajnoc, Kui-Feng Yang a a Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China b School of Earth Sciences and Resources, China University of Geosciences Beijing, 29 Xueyuan Road, Beijing 100083, China c Centre for Exploration Targeting, University of Western Australia, Crawley, WA 6009, Australia article info abstract Article history: The Dongfeng and Linglong gold deposits are located in the northwest Jiaodong Peninsula, North China Craton. Received 21 December 2013 The deposits are mainly hosted in the Mesozoic granitoids and structurally controlled by the Zhaoyuan–Pingdu Received in revised form 26 March 2014 fault zone. Gold mineralization at Dongfeng occurs as disseminated ores and sulfide stockworks, typically Accepted 26 March 2014 enveloped by broad alteration selvages. In contrast, mineralization at Linglong is characterized by massive Available online 13 April 2014 auriferous quartz veins with narrow alteration halos. Three stages of mineralization were identified in both deposits, with the early stage represented by quartz ± pyrite, the middle stage by gold + quartz + pyrite or Keywords: fi Fluid inclusion gold + quartz + base metal sul des, and the late stage by quartz + carbonate ± pyrite, respectively. Four Water–rock interaction types of fluid inclusions were distinguished based on petrography, microthermometry, and laser Raman Phase separation spectroscopy, including (1) pure CO2 fluid inclusions (type I), (2) H2O–CO2–NaCl fluid inclusions (type II), Dongfeng gold deposit (3) H2O–NaCl fluid inclusions (type III), and (4) daughter mineral-bearing or multiphase fluid inclusions (type IV).
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