| Citation: |
DAI Junzhi, CHEN Lixiang, WANG Ruiting, ZHENG Cuiyong, LI Furang, LI Yongqin. Geological, Geochemical Characteristics and Metallogenic Model of the Xujiagou Cu Deposit in Lueyang County, Shaanxi Province[J]. Northwestern Geology, 2016, 49(4): 99-109.
|
Geological, Geochemical Characteristics and Metallogenic Model of the Xujiagou Cu Deposit in Lueyang County, Shaanxi Province
-
Abstract
The Xujiagou Cu deposit lies in the west side of the Tongchang Cu deposit in "Mianxian-Lueyang-Ningqiang" mineralization concentrated area. The orebodies are hosted in the schistose spilitein the Guojiagou formation of Upper Proterozoic Bikou Group, and they are occurred as stratiformed, lentoid shape, which have similar occurrence with schistose spilite or have replaced the spilite, with obvious hydrothermal replacement texture and deformation features. Trace elements and S isotope compositions of host rocks and ores show that ore-forming materials (Cu, Ni and Co elements) were mainly derived from spilite and magma, respectively. Fluid inclusions of the ores suggest that ore-forming fluids mainly belong to medium-high temperature(166~412℃) and moderate-low salinity(2.6%~10.9% NaCleq) NaCl-H2O series, which were mainly sourced from magmatic water, combined with few metamorphic water or formation water. According to the geological characteristics, geochemistry compositions, stable isotopes and dating results, it's considered that the Xujiagou Cu deposit was formed in Mesozoic and was formed by volcanic-exhalation, regional metamorphism and magmatic metallogenesis.-
Keywords:
- Cu deposit /
- spilite /
- ore-forming materials /
- ore-forming fluid /
- metallogenic model
-
-
References
丁振举,姚书振,周宗桂,等. 陕西略阳铜厂铜矿床成矿时代及其地质意义[J]. 西安工程学院学报,1998,20(3):24-27. DING Zhenju, YAO Shuzhen, ZHOU Zonggui, et al. Metallogenic chronology and its geologic significance of Tongchang copper ore deposit, Shaanxi province[J]. Journal of Xi'an Engineering University, 1998,20(3):24-27(in Chinese with English abstract). 李福让,王瑞廷,高晓宏,等. 陕西省略阳县徐家沟铜矿床成矿地质特征及控矿因素[J]. 地质学报,2009,83(11):1752-1761. LI Furang, WANG Ruiting, GAO Xiaohong, et al. Geological characteristics and controlling factors of the Xujiagou Copper deposit in Lueyang County, Shaanxi Province, China[J]. Acta Geologica Sinica, 2009,83(11): 1752-1761(in Chinese with English abstract). 黎彤,倪守斌. 中国大陆岩石圈的化学元素丰度[J]. 地质与勘探,1997,33(1):31-37. LI Tong, NI Shoubin. Element abundances of the continental lithosphere in China[J]. Geology and Prospecting, 1997, 33(1): 31-37(in Chinese with English abstract). 李增田. 细碧岩成因综述[J]. 地质科技情报,1990,9(1):19-24. LI Zengtian. Review on genesis of spilite[J]. Geological Science and Technology information, 1990,9(1): 19-24(in Chinese with English abstract). 任小华. 陕西勉略宁地区金属矿床成矿作用与找矿靶区预测研究(博士论文)[D], 西安:长安大学, 2008:10-116. REN Xiaohua. Research on metalliferous deposit mineralization and prediction of target area for mineral prospecting Mian-lue-Ning region, Shaanxi province[D].Xi'an: Chang'an University, 2008:10-116(in Chinese with English abstract). 王东生. 陕西省略阳县铜厂铜矿床地质特征及成矿分析[J]. 西北金属矿产地质,1992,25(2):8-20. WANG Dongsheng. The geological feature and mineralization of tongchang Cu deposit, Lueyang, Shaanxis province[J]. Northwest Metal Minerals Geolgy, 1992,25(2): 8-20(in Chinese). 王瑞廷,王东生,代军治,等. 陕西秦岭地区主要矿集区铅锌、银、铜、金综合勘查技术研究[M]. 北京:地质出版社,2012:128-137. WANG Ruiting, WANG Dongsheng, DAI Junzhi, et al. Study on synthetical exploration technology for Pb-Zn-Ag-Cu-Au deposits in major mineralization concentrated region of Shaanxi Qinling orogenic belt[M]. Beijing: Geological Publishing House, 2012:128-137(in Chinese with English abstract). 王相,唐荣扬,李实,等. 秦岭造山与金属成矿[M]. 北京:冶金工业出版社,1996:282-287. WANG Xiang, TANG Rongyang, LI Shi, et al. Qing orogeny and metallogenesis[M]. Beijing: Metallurgical Industry Press, 1996: 282-287(in Chinese with English abstract). 叶霖,程增涛,陆丽娜,等. 陕南勉略宁地区铜厂闪长岩岩石地球化学及SHRIMP锆石U-Pb同位素年代学[J]. 岩石学报,2009,25(11):2866-2876. YE Lin, CHENG Zengtao, LU Lina, et al. Petrological geochronology and zircon SHRIMP U-Pb of Tongchang diorites, Mianluening area, Southern Shaanxi province, China[J]. Acta Petrologica Sircica, 2009,25(11):2866-2876(in Chinese with English abstract). 叶霖,刘铁庚,邵树勋. 陕南勉宁略地区铜厂铜矿包裹体地球化学特征研究[J]. 矿物学报,1997,17(2):194-199. YE Lin, LIU Tiegeng, SHAO Shuxun. Inclusion geochemistry of Tongchang Cu deposit in the Mian-Lue-Ning area, South Shaanxi[J]. Acta Mineralogica Sinica, 1997,17(2):194-199(in Chinese with English abstract). 叶霖,杨玉龙,高伟,等. 陕南铜厂铜矿床成矿物质来源探讨[J]. 吉林大学学报(地球科学版),2012,42(1):92-103. YE Lin, YANG Yulong, GAO Wei, et al. Source of ore-forming materials of Tongchang copper ore deposit in Southern Shaanxi Province, China[J]. Journal of Jilin University (Earth Science Edition), 2012,42(1): 92-103(in Chinese with English abstract). CLAYTON R N, MAYEDA T K and MAYEDA T K. Oxygen isotope exchange between quartz and water[J]. Geophys. Res, 1972,77: 3057-3067. MISRA K C. Understanding mineral deposits[M]. Dordrecht: Kluwer Academic Publishers, 2000:170-174. SUN SS, MCDONOUGH WF.Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes[A]. Saunders AD, et al. Magmatism in the Oceanic Basins[C]. Special Publication of Geological Society of London, 1989,42:313-346. -
Access History
Export File
Citation
DAI Junzhi, CHEN Lixiang, WANG Ruiting, ZHENG Cuiyong, LI Furang, LI Yongqin. Geological, Geochemical Characteristics and Metallogenic Model of the Xujiagou Cu Deposit in Lueyang County, Shaanxi Province[J]. Northwestern Geology, 2016, 49(4): 99-109.
DownLoad: