source and secondly from the surrounding rocks. In sum the Jinchanggouliang gold deposit is a shallow orogenic gold deposit formed in the exten

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1 GLOBAL GEOLOGY Vol. 33 No. 3 Sept : 对金厂沟梁金矿床含金石英脉中流体包裹体进行了岩相学显微测温单个包裹体的激光拉曼测试以及 O 和 S 同位素组成等方面研究结果表明, 成矿流体气相成分主要为 H 2 O, 属 H 2 O - NaCl 体系, 包裹体均一温度为 ~ 352, 盐度 [w ( NaCl) /%] 为 1. 05% ~ 5. 99% δ 18 O 值为 ~ 3. 0, 说明成矿流体继承了变质流体的特征, 仍以岩浆水和后期大气降水为主 ; δ 34 S V - CDT 组成为 0. 6 ~ 4. 3, 平均值 , 极差为 3. 1, 表明成矿流体中的硫主要来自于幔源, 其次为围岩综合分析认为, 金厂沟梁金矿床是在燕山晚期太平洋板块俯冲导致岩石圈的快速减薄拆沉的拉张环境下形成的浅成造山型金矿 : 流体包裹体 ; 激光拉曼测试 ; 稳定同位素 ; 金厂沟梁 ; 内蒙古 : P ; P : A doi: /j. issn Characteristics of ore-forming fluid and stable isotope from Jinchanggouliang gold deposit in Inner Mongolia SUN Zhen-jun 1 LI Xue-yuan 2 YU He-nan 1 SUN Guo-sheng 3 ZHU Ji-hao 4 LU Li-na 1 XUE Huai-yu 1 SU Rong 3 1. Department of Earthquake Science Institute of Disaster Prevention Beijing China 2. Inner Mongolia Mining Development Co. Ltd Huhehaote China 3. College of Earth Sciences Jilin University Changchun China 4. Key Laboratory of Submarine Geosciences Second Institute of Oceanography State Oceanic Administration Hangzhou China Abstract The authors studied the petrography and microthermometry on fluid inclusions from auriferous quartz in Jinchanggouliang gold deposit including laser Raman microspectroscopic and oxygen isotope as well as sulphur isotope analyses etc. The results show that the gas phase of ore-forming fluid is mainly composed of H 2 O belonging to H 2 O-NaCl system. The fluid inclusion homogenization temperatures range from to 352 and the salinities are between 1. 05% %. The values of δ 18 O vary from to 3. 0 which indicates that ore-forming fluid inherits the characteristics of metamorphic fluid while is still mainly dominated by the magmatic water and meteoric waters added in later stage. The δ 34 S V - CDT ranges 0. 6 to 4. 3 in composition with the mean as and range as 3. 1 indicating the sulfur in ore-forming fluid mainly came from the mantle

2 source and secondly from the surrounding rocks. In sum the Jinchanggouliang gold deposit is a shallow orogenic gold deposit formed in the extensional environment caused by Pacific Plate's subduction leading to rapid thinning of the lithosphere and delamination in the late Yanshanian period. Key words fluid inclusion laser Raman testing stable isotope Jinchangouliang gold deposit Inner Mongolia NEE SWW EW O NE S NE 1 NE - EW NE NE NNE km 2 1 -

3 593 EW NW NNE NE 70 ~ 80 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Fig.

3 3 593 EW NW NNE NE 70 ~ Fig Geological map of Jinchanggouliang gold deposit 40 t 95% NW NEE NW NNW SN ~ m 0. 3 ~ 1. 0 m ~ g /t NW NW 30 NW SN d 5% 37 NW NW EW 2a b - 2c NWW SN ~ g /t

4 Ⅰ % 3 ~ 5 μm Ⅱ3a ~ 10 μm > 10 μm 20% ~ 50% 35% 3b Ⅲ ~ 8 μm > 8 μm Ⅳ % ~ 40% 30% + 3c ~ 0. 3 mm ~ ~ ~ ~ 320 Linkam 340 ~ 360 THMSG % CO 2 - H 2 O H 2 O 0 ± ~ ~ ~ ~ 240 Reinshaw System Ar ~ nm 20 mw 1 ~ 2 cm ~ ~ ~ 1. 05% ~ 5. 99% 2. 55%

3 595 a. b. c. Py Sp 10 10 - d. Ccp Sp Ccp Sp 10 10 - Fig.

5 3 595 a. b. c. Py Sp d. Ccp Sp Ccp Sp Fig. 2 2 Photographs of ores from Jinchanggouliang gold deposit and part of photomicrographs a. b. c. Fig. 3 3 Photomicrographs of fluid inclusions in Jinchanggouliang gold deposit

6 Table 1 1 Microthemometric data and estimation parameters of fluid inclusions in quartz and calcite from Jinchanggouliang gold deposit Ti / Tht / S /% ρ /g cm - 3 P /MPa Hs /km /μm /% JCGLQ ~ 5 30 ~ ~ ~ ~ ~ ~ ~ JCGLQ ~ 8 15 ~ ~ ~ ~ ~ ~ ~ JCGL ~ 8 15 ~ ~ ~ ~ ~ ~ ~ JCGL ~ 9 25 ~ ~ ~ ~ ~ ~ ~ JCGLF ~ ~ ~ ~ ~ ~ ~ ~ JCGLF ~ 8 15 ~ ~ ~ ~ ~ ~ ~. 40 JCGLF ~ ~ ~ ~ ~ ~ ~ ~ Fig. 4 Histograms of homogenization temperatures of fluid inclusions in Jinchanggouliang gold deposit Fig. 5 Histograms of salinity of fluid inclusions in Jinchanggouliang gold deposit 5 P 1 = P 0 T 1 /T 0 P % = S T 0 = ~ 2. 5% S ~ MPa 19 ~ 21 MPa MPa ~ MPa MPa ~ MPa

7 MPa CO 2 CH MPa 40 MPa H 2 O -NaCl ~ km km ~ 2. 5 km Fig O O BrF 5 MAT253EM SMOW ± 0. 2 δ 18 O H2 O δ 18 O 200 ~ 500 δ 18 O H2 O = δ 18 O T T 5 S MAT253 Histograms of depth for fluid inclusions in Jinchanggouliang gold deposit δ 34 S V - CDT ± O O δ 18 O ~ δ 18 O H2 O = δ 18 O T δ 18 O H2 O ~ Fig. 7 7 Laser Raman spectra of fluid inclusions in Jinchanggouliang gold deposit

8 Table 2 2 O Oxygen isotope data in Jinchanggouliang gold deposit δd V - SMOW / δ 18 O H2 O / δ 18 O V - SMOW / / JCGL -1 / JCGL -2 / JCGL -3 / JCGL -4 / JCGL -5 / / ~ ~ ~ / ~ ~ ~ / ~ ~ ~ Table 3 3 S Sulfur isotope values of sulfides in Jinchanggouliang gold deposit δ 34 S V - CDT / / / JCGL -S JCGL -S JCGL -S JCGL -S JCGL -S ~ δ 18 O ~ δ 18 O H2 O ~ S S 3 δ 34 S V - CDT 0. 6 ~ S 8 δ 34 S V - CDT ~ Fig. 8 Diagram of isotope sulfur values of sulfides in Jinchanggouliang gold deposit 8 δ S V - CDT S

9 δd -δ O H2 O Fig. 10 Diagram of δd -δ 18 O H2 O in Jinchanggouliang gold deposit S S S δ 34 S S Fig. 9 Relation between homogenization temperature and salinity in Jinchanggouliang gold deposit δd -δ 18 O H2 O ~ 125 Ma ± 5 Ma 2 Sierra Foothills and Klamath Mts 450 ± 8 Ma ± 20 Ma

10 WANG Jian-ping LIU Yong-shan DONG Fa-xian et al. Ore-controlling structure analysis of Jinchanggouliang H -O S gold deposit in Inner Mongolia M. Beijing Geological Publishing House CO 2 D Groves 30 HOU Wan-rong. Contrast study on Hadamengou gold deposit 0 ~ 6 km 150 ~ 300 and Jinchanggouliang gold deposit Inner Mongolia Ph. D thesis D. Beijing Chinese Academy of Geologieal 5 Sciences U -Pb H 2 O H 2 O -NaCl J MIAO Lai-cheng FAN Wei-ming ZHAI Ming-guo et 4 al. Zircon SHRIMP U -Pb geochronology of the granitold intrusions from Jinchanggouliang - Erdaogou gold ore field 1. 05% ~ 5. 99% ~ MPa 19 ~ 21 MPa ~ km km and its significance J. Acta Petrologica Sinica O J S CHEN Jun-qiang SUN Jing-gui PIAO Shou-cheng et al. Genesis and significance of dark dikes in the Jinchanggouliang 3 mine area Inner Mongolia evidences from geochemistry of the major and trace elements J. Journal of Jilin University Earth Science Edition M. 1. J LU Huan-zhang FAN Hong-rui NI Pei et al. Fluid ZHANG Li-dong. Geological characteristics and genesis of gold deposits in Jinchanggouliang region J. Bull. inclusions M. Beijing Science Press M Shenyang Inst. Geol. Min. Res. Chniese Acad. Geol. SHAO Jie-lian. Mineralogy of the gold prospecting M. Sci Beijing China University of Geosciences Press J JIA Hong-jie ZHANG Bao-qing CAI Chun-jie. Discussion J on geologic character and genesis of deposit in Jinchanggouliang gold mine J. Nonferrous Mines SUN Feng-yue JIN Wei LI Bi-le et al. Considerations on the mineralizing depth of hydrothermal lode gold 3. deposits J. Journal of Changchun University of Science M and Technology Suppl Burke E A J Raman micro-spectrometry of fluid

11 3 601 inclusions J. Lithos to geology the hydrothermal mineralization of metal activation and its prospecting M. Xi'an Shaanxi Sci- J ence and Technology Press LIU Gang JIN Bao-yi WANG Gui-juan. Characteris- 19. tics of fluid inclusions and genesis of gold deposits in J. Chifeng-Chaoyang area northeastern China J. Gold Geology Clayton R N O'Neil J R Mayeda T K. Oxygen isotope exchange between quartz and water J. Journal of Geophysical Research deposit in Inner Mongolia and its origin J. Journal of Geomechanics J LIU Zong-xiu WEI Cun-di ZHAO Chun-guang et al. Discussin on genesis and geological geochemical feature of Jinchanggouliang - Erdaogou gold minerogenetic field J. World Geology D WEI Cun-di. Classification and research on gold-deposits of long distance type and short distance type in Chifeng - Chaoyang region Ph. D thesis D. Changchun Jilin University J ZHOU Nai-wu. Sequence of gold copper mineralization times in Jinchanggouliang gold deposit J. Gold 16. Journal J MAO Jing-wen HE Ying DING Ti-ping. Mantle fluids J Involved in metal logenesis of Jiaodong East Shan- LIU Shu-wen WANG Wei BAI Xiang et al. Geo- dong gold district evidence of C O and H isotopes logical events of early Precambrian complex in North J. Mineral Deposits Nie F J. Geology and origin of the Dongping alkalic-type gold deposit northern Hebei Province People's Republic of China J. Resource Geology M ZHANG Li-gang. The application of the stable isotope ZHAI Jian-ping HU Kai LU Jian-jun. Study on fluid inclusions and hydrogen and oxygen isotope geochemistry of Rushan gold deposit in Shandong Province J. Geochimica Suppl J. J ZHANG Chang-chun WANG Shi-qi ZHANG Tao. JIANG Shao-yong DAI Bao-zhang JIANG Yao-hui Stable isotope characteristics of Jinchanggouliang gold et al. Jiaodong and Xiaoqinling two orogenic gold provinces formed in different tectonic settings J. Acta Petrologica Sinica PGE J LI Yi-xin SUN Jing-gui CHEN Jun-qiang et al. The geochemical characteristics of PGE siderophile and ore-forming chalcophile elements of Jinchanggouliang gold copper deposits Inner Mongolia their provenance and tectonic setting J. Earth Science Frontiers Chaoyang area Liaoning Province J. Acta Petrologica Sinica Liu S W Santosh M Wang W et al. Zircon U-Pb chronology of the Jianping complex implications for the precambrian crustal evolution history of the northern. margin of North China Craton J. Gondwana Re- 1 search Wang W Liu S Bai X et al. Geochemistry and zir-

12 con U -Pb -Hf isotopic systematics of the Neoarchean Yixian - Fuxin greenstone belt northern margin of the North China craton implications for pedogenesis and tectonic setting J. Gondwana Research D J LI Fu-dong ZOU Xiang-hua GAO Ji-pu et al. On the rapid-positioning and prediction for microdissemination type sedimentary rock host gold deposit ore bodies Ma'anqiao J. Northwest Geology WANG Li. Study on the regional metallogenic model of lode gold deposits in the North China Block Ph. D thesis D. Changchun Jilin University Pearce J A Harris B W Tindle A G. Trace element discrimination diagrams for the tectonic interpretations of granitic rocks J. Journal of Petrology Zhao Y M Zhang Y N Bi C S. Geology of gold bearing skarn deposits in the middle and lower Yangtze River valley and adjacent regions J. Ore Geology Reviews Zhou J B Wilde S A Zhang X Z et al. The onset of J LUO Zhen-kuan GUAN Kang YU He-yong et al. The key factors for formation of large-superlarge Au deposits in Zhaolai area Jiaodong region J. Geology and Mineral Resources Research J LI Jun-jian LUO Zhen-kuan LIU Xiao-yang Heyong et al. Geodynamic setting for formation of largesuperlarge Pacific margin accretion in NE China evidence from gold deposits and Mesozoic granites in the Heilongjiang high-pressure metamorphic belt J. Tectonophysics Groves D I Goldfarb R J Gebre-Mariam et al. Orogenic gold deposits a proposed classification in the context of their crustal distribution and relationship to other Jiaodong area J. Mineral Deposits J. D gold deposit types J. Ore Geology Reviews 1998 ZHAI Ming-guo YAN Jin-hui LIU Wen-jun. large gold ore district and large-scale mineralization in Jia- 31. odong area J. Science in China Ser. D 2001 J ZHANG Fu-xin ZHANG Wang-ding ZHANG Zhengbing. Type and structural setting of gold deposit in Qinl ing orogenic belt J. Gold Geology Goldfarb R J Groves D I Gardfoll S. Orogenic gold and geologic time a global synthesis J. Ore Geology Reviews Elder D Cashman S M. Tectonic control and fluid evo- 32. lution in the Quartz Hill California Lode Gold Deposits J. Economic Geology

1 103 to and the salinity varies from % to % NaCleqv. The homogenization temperatures of vaporrich fluid inclusions range from 415.

1 103 to and the salinity varies from % to % NaCleqv. The homogenization temperatures of vaporrich fluid inclusions range from 415. 34 1 2015 3 GLOBAL GEOLOGY Vol. 34 No. 1 Mar. 2015 1004 5589 2015 01 0102 11 1 1 2 1 1 1 3 1. 130061 2. 024005 3. 024000 5 Ⅰ-1 VL LV NaCl SL VL 375. 4 ~ 479. 8 10. 73% ~ 13. 73% NaCleqv LV 415. 2 ~ 458.