| Citation: |
LIU Wenyi, HE Meixiang, WANG Zhensheng, WANG Wei, CHENG Guangguo. 2018. Geochemical Characteristics of Granodioritefrom Manley-Mandah Cu-Au Metallogenic Belt in South Gobi of Mongolia and Its Geological Significance. Northwestern Geology, 51(4): 147-155.
|
Geochemical Characteristics of Granodioritefrom Manley-Mandah Cu-Au Metallogenic Belt in South Gobi of Mongolia and Its Geological Significance
-
Abstract
The studying area is located in South Gobi and the northern part of East Gobi province of Mongolia, which belongs to Manley-Mandah Cu-Au metallogenic belt of southern Mongolia metallogenic area. The Hercynian granodiorite, granite and Carboniferous-Permian volcanic rocks were occurred in this area, with quartz vein type, porphyry type and alteration-rock type copper-gold mineralization. The nearly EW-direction regional structures control the diagenesis and mineralization, and the granodiorite intrusion is closely related to the origin and temperal-spatial distribution of copper-gold mineralization in this area. The main orebodies are occurred in altered granodiorite. The geochemical results show that these granodiorites have high SiO2 (61.3%~67.2%), calc-alkaline (Rittman indexes range from 2.07 to 2.34, all samples fall into the calc-alkaline area in AR-SiO2 diagram), Sr (491×10-6~631×10-6) and Sr/Y (42.7~80.9), but they have low Yb (0.8×10-6~1.2×10-6) and Y (7.8×10-6~13×10-6), with depleted HREE and no obvious negative Eu anomalies, showing the characteristics of adakitic rocks. Based on the regional metallogenetic study, it can be concluded that this area has the potential for prospecting large porphyry copper-gold deposits.-
Keywords:
- Cu-Au metallogenic belt /
- Manley-Mandah /
- geochemistry /
- adakite /
- porphyry
-
-
References
方俊钦,聂凤军,徐备,等.蒙古国欧玉陶勒盖斑岩型铜(金)矿田的找矿新进展[J].地质科技情报, 2013,32(5):188-194. FANG Junqin,NIE Fengjun,XU Bei, et al. Prospecting Progress of the Oyu Tolgoi Porphyry Copper-Gold Orefield in Mongolia[J].Geological Sience and Technology Information, 2013,32(5):188-194. 方维萱,杨社锋,刘正桃,等.蒙古查干苏布尔加(Tsagaan Suvarga)大型斑岩型铜钼矿床含矿蚀变岩常量、微量和稀土元素地球化学特征及意义[J].中国稀土学报, 2007, 25(1):85-94. FANG Weixuan, YANG Shefeng, LIU Zhengtao, et al. Geochemica1 characteristics and significance of major elements,trace elements and REE in mineralized altered rocks of large scale Tsagaan Suverga Cu-Mo porphyry deposit in Mongolia[J].Journal of the Chinese Rare Earth Society, 2007,25(1):85-94. 郭百创,于宝显,张帅,等. 蒙古国玛达特地区铜钼及铅锌银矿矿床成因类型探讨[J].西北地质, 2013, 46(1):130-138. GUO Baichuang, YU Baoxian, ZHANG Shuai, et al. Discussion on the Genetic Type of Cu-Mo and Pb-Zn-Ag Deposits of the Madate Area in Mongolia[J]. Northwestern Geology, 2013, 46(1):130-138. 洪大卫,王式洸,谢锡林,等.试析地幔来源物质成矿域-以中亚造山带为例[J].矿床地质, 2003, 22(1):41-55. HONG Dawei, WANG Shiguang, XIE Xilin, et al. Metallogenic Province Derived from Mantle Sources:A Case Study of Central Asian Orogenic Belt[J]. Mineral Deposits, 2003, 22(1):41-55. 侯万荣,聂凤军,江思宏,等.蒙古国查干苏布尔加大型铜-钼矿床地质特征及成因[J].地球学报, 2010,31(3):307-320. HOU Wanrong,NIE Fengjun,JIANG Sihong, et al. The Geology and Ore-forming Mechanism of the Tsagaan Suvarga Large-size Cu-Mo Porphyry Deposit in Mongolia[J].Acta Geoscientica Sinica, 2010,31(3):307-320. 黄崇轲,白冶,朱裕生.中国铜矿床[M].北京:地质出版社, 2001,1-198. HUANG Chongke, BAI Ye, ZHU Yusheng. The poryry copper deposits in China[M]. Beijing:Geological Publishing House, 2001,1-198. 江思宏,聂凤军,苏永江,等.蒙古国额尔登特特大型铜-钼矿床年代学与成因研究[J].地球学报, 2010,31(3):289-306. JIANG Sihong,NIE Fengjun, SU Yongjiang, et al. Geochronology and Origin of the Erdenet Superlarge Cu-Mo Deposit in Mongolia[J].Acta Geoscientica Sinica, 2010, 31(3):289-306. 刘益康,徐叶兵.蒙古 Oyu Tolgoi 斑岩铜金矿的勘查[J].地质与勘探, 2003, 39(1):1-4. LIU Yikang, XU Yebing. The prospecting and main features of Oyu Tolgoi porphyry Cu-Au deposit in Mongolia[J].Geology and Prospecing,2003,39(1):1-4. 聂凤军,江思宏,张义,等.中蒙边境及邻区斑岩型铜矿床地质特征及成因[J].矿床地质, 2004, 23(2):176-189. NIE Fengjun, JIANG Sihong, ZHANG Yi,et al. Geological Features and Origin of Porphyry Copper Deposits in China-Mongolia Border Region and Its Neighboring Areas[J]. Mineral Deposits, 2004, 23(2):176-189. 杨建国,王小红,谢燮,等. 东天山-北山地区埃达克岩与斑岩型铜、金、钼矿床研究现状综述[J].西北地质, 2012, 45(2):65-72. YANG Jianguo, WANG Xiaohong, XIE Xie, et al. A Review of Adakitic Rocks and Their Relationship with the Porphyry Cu(-Au-Mo) Deposits in East Tianshan-Beishan Area, China[J]. Northwestern Geology, 2012, 45(2):65-72. 王伟,刘继顺,成功.蒙古国南部曼莱苏木铜金矿区地质特征与找矿远景研究[J].地质找矿论丛, 2015, 30(2):215-220. WANG Wei,LIU Jishun,CHENG Gong. Geological Characteristics Prospecting Analysis of Manlay Cu-Au Mineralization Zone in the South Mongolia[J].Contributions to Geology and Mineral Resource Research, 2015,30(2):215-220. 张旗,秦克章,王元龙, 等.加强埃达克岩研究,开创中国Cu、Au等找矿工作的新局面[J].岩石学报, 2004,20(2):195-204. ZHANG Qi,QIN Kezhang,WANG Yuanlong, et al. Study on adakite broadened to challenge the Cu and Au exploration in China[J].Acta Petrologica Sinica, 2004,20(2):195-204. 张义,聂凤军,江思宏.中蒙边境欧玉陶勒盖大型铜-金矿床的发现及对找矿勘查工作的启示[J].地质通报, 2003,22(9):708-712. ZHANG Yi, NIE Fengjun, JIANG Sihong. Discovery of the Oyu Tolgoi porphyry copper-gold deposits along the Sino-Mongolia border and its significance for further mineral exploration[J]. Geological Bulletin of China, 2003, 22(9):708-712. 朱明帅, ANAAD C, BAATAR M, 等.蒙古国查干苏布尔加和苏廷铜矿容矿斑岩体SHRIMP锆石U-Pb年龄[J].地质通报, 2015,34(4):188-194. ZHU Mingshuai, ANAAD C, BAATAR M, et al. SHRIMP zircon U-Pb dating of Tsagaan Suvarga and Shuteen porphyry copper deposits:Constraints on metallogenic time and tectonic setting of porphyry-type mineralization in South Gobi, Mongolia[J].Geological Bulletin of China, 2015,34(4):188-194. BLIGHT J H S,CROWLEY Q G,PETTERSON M G,et al. Granites of the Southern Mongolia Carboniferous Arc:New geochronological and geochemical constraints[J]. Lithos, 2010,116:35-52. DEFANT M J, DRUMMOND M S. Derivation of some modern arc magmas by melting of young subduction lithosphere[J].Nature, 1990,347:662-665. KIRWIN D J,FORSTER C N,KAVALIERIS I, et al. The Oyu Tolgoi copper-gold deposit,South Gobi,Mongolia[A]. SELTMANN R, GEREL O, KIRWIN D J(eds). Geodynamics and Metallogeny of Mongolia with a Special Emphasis on Copper and Gold Deposits[C]. London:IAGOD Guidebook Series 11, 2005a:155-174. KIRWIN D J,WILSON C C,TURMAGNAI D, et al. Exploration history, geology, and mineralization of the Kharmagtai gold-copper porphyry district,South Gobi region,Mongolia[A]. SELTMANN R, GEREL O, KIRWIN D J(eds).Geodynamics and Metallogeny of Mongolia with a Special Emphasis on Copper and Gold Deposits[C]. London:IAGOD Guidebook Series 11, 2005b:175-191. MOROZUMI H. Geochemical characteristics of granitoids of the Erdenet Porphyry copper deposit,Mongolia[J]. Resource Geology, 2003,53(4):311-316. WATANABE Y, STEIN H J. Re-Os ages for the Erdenet and Tsagaan Suvarga porphyry Cu-Mo deposits, Mongolia, and tectonic implications[J].Economic Geology,2000, 95(7):1537-1542. -
Access History
Export File
Citation
LIU Wenyi, HE Meixiang, WANG Zhensheng, WANG Wei, CHENG Guangguo. 2018. Geochemical Characteristics of Granodioritefrom Manley-Mandah Cu-Au Metallogenic Belt in South Gobi of Mongolia and Its Geological Significance. Northwestern Geology, 51(4): 147-155.
DownLoad: