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

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1 GLOBAL GEOLOGY Vol. 34 No. 1 Mar Ⅰ-1 VL LV NaCl SL VL ~ % ~ % NaCleqv LV ~ % ~ 7. 67% NaCleqv SL ~ % ~ % NaCleqv Ⅰ -1 - NaCl -H 2 O Ⅰ -2 VL LV VL ~ % ~ % NaCleqv LV ~ % ~ 5. 01% NaCleqv Ⅰ-2 NaCl -H 2 O Ⅱ-2 VL ~ % ~ 5. 62% NaCleqv - NaCl -H 2 O - NaCl -H 2 O - NaCl -H 2 O P P A doi /j. issn Metallogenic fluid characteristics of Baiyinnuo'er Pb -Zn deposit of Inner Mongolia YU Qi 1 WANG Ke-yong 1 HAN Yi 2 ZHANG Xue-bing 1 WANG Cheng-yang 1 LI Jian-feng 1 WANG Ze-hai 3 1. College of Earth Sciences Jilin University Changchun China 2. Shandong Gold Geological Minerals Survey Co. Ltd Chifeng Inner Mongolia China 3. Inner Mongolia Chifeng Institute of Geology and Mineral Exploration and Development Chifeng Inner Mongolia Abstract The Baiyinnuo'er Pb -Zn mineral deposit is a large skarn-type deposit. The mineralization is in two periods and five stages. The research on fluid inclusion micro-thermometry indicates that in the stage Ⅰ-1 are mainly developed the aqueous two-phase inclusions vapor-rich inclusions and NaCl daughter mineral-bearing threephase fluid inclusions. The homogenization temperatures of aqueous two-phase fluid inclusions range from KY wangky@ jlu. edu. cn

2 1 103 to and the salinity varies from % to % NaCleqv. The homogenization temperatures of vaporrich fluid inclusions range from to and the salinity varies from 5. 32% to 7. 67% NaCleqv. The homogenization temperatures of NaCl daughter mineral-bearing three-phase fluid inclusions range from to and the salinity varies from % to % NaCleqv. The fluid inclusions of stage Ⅰ-1 belong to the immiscible NaCl - H 2 O hydrothermal system with medium-high temperature and high salinity. Stage Ⅰ-2 mainly develops two types of fluid inclusions. The homogenization temperatures of aqueous two-phase fluid inclusions range from to and the salinity varies from 5. 17% to % NaCleqv. The homogenization temperatures of aqueous two-phase fluid inclusions range from to and the salinity varies from 1. 98% to NaCleqv. The fluid inclusions of stage Ⅰ-2 belong to the immiscible NaCl - H 2 O hydrothermal system with medium temperature and medium salinity. In the stage Ⅱ-2 main metallogenic stage are mainly developed the aqueous two-phase fluid inclusions in which the homogenization temperatures range from to and the salinity varies from 0. 83% to 5. 62% NaCleqv. The fact indicates that the fluid inclusions of the stage Ⅱ-2 belong to the uniform NaCl - H 2 O hydrothermal system with medium-low temperature and low salinity. In the process of the evolution from the immiscible NaCl - H 2 O hydrothermal system with medium-high temperature and high salinity to the uniform NaCl - H 2 O hydrothermal system with medium-low temperature and low salinity the metallic element gradually enriches and forms the industrial ore body eventually. The study on the C H O i- sotope in the fluid inclusions indicates that the early fluid mainly comes from magmatic water with the participation of a small amount of atmospheric precipitation and the main source of later fluid inclusions is atmospheric precipitation. Key words Baiyinnuo'er Pb -Zn deposit metallogenic fluid characteristics geological characteristics Inner Mongolia

3 ~ 20 km B P 1 h J 3 mk Fig Geological sketch map of Baiyinnuo'er area 1 3

4 m 600 m 108 1A 5 40 ~ Ⅰ-1 - Ⅰ-2 Ⅰ Ⅱ Ⅱ % ~ 40% 60% ~ 90% m 200 ~ 400 m ~ ~ Ⅰ-1 Ⅰ-2 85 Ⅱ ~ mm 3 ~ 4 h

106 34 NaCl SL Carl LV Zeiss Axiolab 10 50 1 VL LinkamTHMS -600 ± 0. 1 < 40% 25% ~ 30% MacFlincor 7 ~ 25 μm 10 ~ 15 μm 7 3. 1 3. 1. 1 Ⅰ-1 Ⅰ-1 VL 2a a.

5 NaCl SL Carl LV Zeiss Axiolab VL LinkamTHMS -600 ± 0. 1 < 40% 25% ~ 30% MacFlincor 7 ~ 25 μm 10 ~ 15 μm Ⅰ-1 Ⅰ-1 VL 2a a. Ⅰ-1 b. Ⅰ-1 NaCl c. Ⅰ-1 d. Ⅰ-2 e. Ⅰ-2 f. Ⅱ-2 V H2 O. H 2 O. L H2 O. H 2 O S. NaCl Fig. 2 2 Photomicrographs of fluid inclusions occurred in various stages

6 SL ~ a 0. 5 ~ 25% ~ 40% g /cm % ~ 30% LV ~ NaCl % ~ 8 ~ 18 μm 10 ~ 15 μm 2b ~ a ~ g /cm 3 3 LV > 50% 4 80% ~ 90% SL 10 ~ 15 μm ~ c ~ a Ⅰ % ~ % Ⅰ-2 VL NaCleqv 3b LV 1 VL Ⅰ-2 < 50% 15% ~ VL ~ 30% 5 ~ 20 μm ~ 15 μm 5. 17% ~ % NaCleqv 3d 2d 2 LV ~ c > 70% ~ 80% ~ 95% g /cm ~ 15 μm 2e Ⅱ-2 Ⅱ-2 VL NaCleqv 3d ~ c ~ g /cm 3 4 < 40% Ⅱ-2 25% ~ 30% 7 ~ 25 μm 10 ~ 15 μm 2f 7. 67% NaCleqv 3b ~ g /cm 3 LV ~ % ~ 5. 01% VL ~ % ~ 5. 62% NaCleqv 3f Ⅰ ~ VL ~ e ~ g /cm % ~ % NaCleqv 3b 4

7 a. Ⅰ-1 b. Ⅰ-1 c. Ⅰ-2 d. Ⅰ-2 e. Ⅱ-2 f. Ⅱ-2 Fig. 3 3 Histograms of homogenization temperature and salinity of fluid inclusions in various stages

8 1 109 Fig Scattergram of salinity homogenization temperature and density of fluid inclusions MAT253EM ± Ⅰ-2 Ⅱ-2 ± ~ 60 99% BrF 5 9 BrF h Table 1 1 Ⅰ-2 Ⅱ-2 Analysis results of carbon hydrogen and oxygen isotopes of fluid inclusions in Ⅰ-2 and Ⅱ-2 stage of Baiyinnuo'er deposit δ 18 O V - SMOW / 10-3 δd V - SMOW / 10-3 δ 13 C V - SMOW / 10-3 δ 18 O H2 O - SMOW / 10-3 Ⅰ-2 BN BN BN BN BN BN Ⅱ-2 BN BN BN BN BN BN δ 18 O V - SMOW δ 18 O δd V - SMOW / 10-3 H 2 O δd δ 13 C V - SMOW / 10-3 CO 2 13 C δ 18 O H2 O - SMOW δ 18 O V - SMOW - δ 18 O H2 O - SMOW = /T

9 CO min CO 2 δ 13 C V - SMOW ~ < 20% Fig. 5 δ 13 C 13 SL NaCl -H 2 O Hydrogen -oxygen isotope diagram of fluid inclusions H Ⅰ-1 Ⅰ-2 Ⅱ-2 δ 18 O H2 O - SMOW δd V - SMOW 5 Ⅰ-2 δ 18 O H2 O - SMOW Ⅰ-1 δd V - SMOW 15 SL δd V - SMOW 12 Ⅱ-2 δd V - SMOW - NaCl -H 2 O Ⅰ-2 δd V - SMOW Ⅰ-1 SL Ⅱ-2 VL - NaCl -H 2 O NaCl -H 2 O

10 Ⅰ-2 Ⅱ-2 Ⅱ-2 Ⅰ-2 VL LV - 1. J ZENG Qing-dong LIU Jian-ming JIA Chang-shun et al. Sedimentary exhalative origin of the Baiyinnuoer Zinc- Lead deposit Chifeng Inner Mongolia geological and sulfur isotope evidence J. Journal of Jilin University Earth Science Edition J JIANG Si-hong NIE Feng-jun BAI Da-ming et al. 5 Geochronology evidence for Indosinian mineralization in 1 Baiyinnuoer Pb -Zn deposit of Inner Mongolia J. Mineral Deposits J Ⅰ VL LV SL Ⅰ-2 SHU Qi-hai LAI Yong WEI Liang-min et al. Fluid VL LV Ⅱ-2 inclusion study of the Baiyinnuo'er Zn -Pb deposit south VL segment of the Great Xing'an Mountain northeastern China1Acta Petrologica Sinica J. Acta Petrologica Sini- 3 Ⅰ-1 - NaCl -H 2 O ca Ⅰ-2 4. NaCl -H 2 O Ⅱ-2 J NaCl -H 2 O ZHANG De-quan LEI Yun-fen LUO Tai-yang et al. - Geological characteristics and metallogeny of the NaCl -H 2 O - Baiyinnuo'er Zn -Pb deposit Inner Mongolia J. Mineral Deposits Ⅰ-2 Ⅱ-2 J ZENG Qing-dong LIU Jian-ming WAN Zhi-min et

11 al. Structural controls and exploration targets of the Baiyinnuo'er Zn -Pb deposit Chifeng Inner Mongolia J. Geotectonica et Metallogenia M YAO Feng-liang SUN Feng-yue. Mineral deposit tutorial M. Beijing Geological Publishing House J QIN Dan-he WANG Ke-yong CHANG Liang et al. Geological characteristics and fluid inclusions of Jiuqu gold deposit in Linglong Shandong J. Global Geology J. 15 Bodnar R J. Fluid inclusion evidence for a magmatic source for metals in porphyry copper deposits C / / LI Xiang-wen WANG Ke-yong QIAN Ye et al. The Tompson J. Fluids and ore deposits. Mineralogical Association geochemical characteristics of ore-forming fluids of Daheishan molybdenum deposit and its geological significance of Canada Short Course Canada Mineralogi- cal Association of Canada Jilin Province J. Acta Petrologica Sinica Clayton R N Mayede T K. The use of Bromine pentafluoride in the extraction of oxygen from oxides and silicates for isotopic analysis J. Geoanalytical Research Coleman M L Sheppard T J Durham J J et al. Reduction of water with zinc for hydrogen isotope analysis J. Analytical Chemistry Mao J W Wang Y Ding T et al. Dashuiguo tellurium deposit in Sichuan Province China S C O and H isotope data and their implications on hydrothermal mineralization J. Resource Geology M ZHENG Yong-fei CHEN Jiang-feng. Geochemistry of stable isotopes M. Beijing Science Press M ZHANG Li-gang. The application of stable isotope to geology M. Xi'an Shanxi Science and Technology Press J SUN Qing-zhong ZHENG Yuan-chuan HOU Zengqian et al. Genesis of Bangbu orogenic gold deposit in Tibet constraints from fluid inclusions and isotopic composition J. Mineral Deposite J WANG Lei SUN Feng-yue XU Qing-lin. Fluid inclusions and genesis of Daheishan molybdenum deposit in Jilin J. Global Geology J WANG Ke-yong QING Min ZHANG Xin-na et al. Study on the characteristics of fluid inclusions and metallogenic evolution of Jinchang gold deposit Heilongjiang Province J. Acta Petrologica Sinica

164 2011 年 Fig.1 图 1 [2] 湘东北地区黄金洞金矿地质图 Geological map of Huangjindong gold deposit, Northeastern Hunan Province 1. 白垩系 ;2. 二叠 - 泥盆系 ;

164 2011 年 Fig.1 图 1 [2] 湘东北地区黄金洞金矿地质图 Geological map of Huangjindong gold deposit, Northeastern Hunan Province 1. 白垩系 ;2. 二叠 - 泥盆系 ; 第 27 卷第 2 期 2011 年 6 月 Geology and Mineral Resources of South China Vol.27, No.2 June, 2011 文章编号 : 1007-3701(2011)02-0163-006 湖南黄金洞金矿成矿流体包特征李杰, 陈必河 1, 安江华 1, 谭仕敏 1, 张孝国 2 1,