Research on Isotope Identification for Anomalous Sources of Deep Penetration Geochemistry: Two Cases of Jinwozi Au Deposit, Xinjiangand BairendabaWeilasituo Polymetallic Deposit, Inner Mongolia

Abstract

Abstract:

Through research on lead and sulfur isotopic characteristics of different media (earthgas, finegrained soil, surrounding rock, ore) in two known concealed deposits (Jinwozi gold deposit in Xinjiang, Bairendaba Weilasituo polymetallic deposit in Inner Mongolia), the following conclusions are drawn in this paper.In these two deposits, lead isotopic ratios (208Pb/204Pb, 207Pb/204Pb and 206Pb/204Pb) generally increased from the earthgas, ores, surrounding rocks to the soil.The δ34S of anomaly zones was higher than that of soil background areas.The test of variance analysis on the lead isotopic compositions of earthgas, the lead and sulfur isotopic characteristics of soil proved no significant isotopic differences between background and abnormal areas, which preliminarily proved that it is inappropriate to trace the source of abnormal substances by lead, sulfur isotope of earthgas and soil in these two deposits.But the Pb isotopic compositions of ores and surrounding rocks in these two deposits were significantly different.That is, the surrounding rocks obviously have accumulation of radiogenic lead.However, this difference was not significantly reflected in the earthgas of background and abnormal areas.This paper discussed its reasons only from the perspective of the capture fluids.Lead, sulfur isotopic compositions in the soil were analyzed to trace the source of abnormal substances in this paper, which was not successful.Further research will adopt partial extraction method to measure lead, sulfur isotopic compositions in active phase of soil.

Key words: deep penetration geochemistry, isotope, Jinwozi gold deposit in Xinjiang, Bairendaba Weilasituo polymetallic deposit in Inner Mongolia

LIU Xue-Min, CHEN Yue-Long, WANG Hua-Qiu. Research on Isotope Identification for Anomalous Sources of Deep Penetration Geochemistry: Two Cases of Jinwozi Au Deposit, Xinjiangand BairendabaWeilasituo Polymetallic Deposit, Inner Mongolia[J]. Geoscience, 2012, 26(5): 1104-1116.

References

[1］高玉岩, 汪明启, 夏修展, 等.某些景观区隐伏金属矿地气法试验结果
[J].物探与化探, 2010, 34(2): 144-149.
［2］高玉岩, 汪明启, 徐洋.隐伏金属矿床及背景区地气组分特征研究——以河北省宣化张全庄金矿为例
[J].地质调查与研究, 2010, 33(3): 198-206.
［3］汪明启, 高玉岩.利用铅同位素研究金属矿床地气物质来源:甘肃蛟龙掌铅锌矿床研究实例
[J].地球化学, 2007, 36(4): 391-399.
［4］刘应汉, 任天祥, 汪明启, 等.隐伏矿区地气测量试验及效果
[J].有色金属矿产与勘查, 1995, 4(6): 355-360.
［5］童纯菡, 梁兴中, 李巨初.地气测量研究及在东季金矿的试验
[J].物探与化探, 1992, 16(6): 446-451.
［6］汪明启, 高玉岩, 张得恩, 等.地气测量在北祁连盆地区找矿突破及其意义
[J].物探与化探, 2006, 30(1): 7-12.
［7］伍宗华, 金仰芬, 郭英杰, 等.地气测量在叶县—邓县—南漳地学剖面研究中的应用
[J].岩石学报, 1995, 11(3): 333-342.
［8］常华进, 储雪蕾, 黄晶, 等.沉积环境细菌作用下的硫同位素分馏
[J].地质论评, 2003, 53(6): 807-813.
［9］Habicht K, Canfield D E, Ret hemeier J.Sulfur isotope fractionation during bacterial reduction and disproportionation of thiosulfate and sulfite
[J].Geochimica et Cosmochimica Acta, 1998, 62(15): 2585-2595.
［10］文雪琴.荒漠戈壁区深穿透地球化学的理论方法及应用研究
[D].西安: 长安大学, 2008：1-116.
［11］文雪琴, 王学求, 叶荣, 等.干旱戈壁区金属元素的垂向变化与分散——以新疆金窝子金矿为例
[J].矿物岩石地球化学通报, 2010, 29(1): 38-51.
［12］王学求, 刘占元, 叶荣, 等.新疆金窝子矿区深穿透地球化学对比研究
[J].物探与化探, 2003, 27(4): 247-254.
［13］潘小菲, 刘伟.北山金窝子金矿床流体包裹体特征及成矿流体演化
[J].岩石学报, 2006, 22(1): 253-263.
［14］孙丰月, 王力.内蒙拜仁达坝银铅锌多金属矿床成矿条件
[J].吉林大学学报：地球科学版, 2008, 38(3): 376-383.
［15］王瑾，侯青叶，陈岳龙，等.内蒙古维拉斯托铜多金属矿床流体包裹体研究
[J].现代地质，2010，24(5):847-855.
［16］刘应汉, 刘京秋, 张华, 等.纳米微粒物质测量中动态累积法采样技术
[J].物探与化探, 2008, 32(1): 61-65.
［17］刘伟, 李新俊, 邓军.东天山金窝子石英脉金矿床成矿流体和成矿物质的来源
[J].中国科学：D辑, 2002, 32(增刊): 105-119.
［18］雒利平, 冯建忠, 傅水兴, 等.甘肃金窝子金矿地质地球化学特征
[J].有色金属矿产与勘查, 1999, 8(5): 522-525.
［19］朱炳泉.壳幔化学不均一性与块体地球化学边界研究
[J].地学前缘, 1998, 5(1/2): 72-82.
［20］朱炳泉, 常向阳.地球化学省与地球化学边界
[J].地球科学进展, 2001, 16(2): 153-162.
［21］Wang Xueqiu, Cheng Zhizhong, Liu Dawen, et al.Nanoscale metals in earthgas and mobile forms of metals in overburden in widespaced regional exploration for giant ore deposits in overburden terrains
[J].Journal of Geochemical Exploration, 1997, 58(1): 63-72.
［22］Wang Xueqiu.Leaching of mobile forms of metals in overburden: development and applications
[J].Journal of Geochemical Exploration, 1998, 61(1/3)：39-55.
［23］尤宏亮.深穿透地球化学方法综述
[J].有色矿冶, 2005, 21(6): 3-6.

[1]	LIU Qingzhan, JIANG Xiaojun, WANG Guo, LI Tianyu, LI Dongpeng. Petrogenesis and Tectonic Setting of the Nanpaotai Granite Porphyry in Inner Mongolia: Constraints from Zircon U-Pb Geochronology, Hf Isotopes, and Whole-rock Geochemistry [J]. Geoscience, 2024, 38(01): 154-168.
[2]	SONG Yanbo, WANG Jianping, SHEN Cunli, CHE Dong, YANG Wenhua, GUO Haijiao. Geological and Geochemical Characteristics of Ore-forming Granite Porphyry and Its Metallogenic Significance in the Zhalageamu Copper Deposit, Inner Mongolia [J]. Geoscience, 2023, 37(06): 1482-1494.
[3]	YANG Yuanjiang, DENG Changzhou, LI Chenglu, YANG Wenpeng, FU Anzong, ZHENG Bo, YUAN Maowen, ZHANG Lidong. Genesis and Tectonic Significance of Early Jurassic Cuiluan A-type Granite in the Lesser Hinggan Mountains [J]. Geoscience, 2023, 37(06): 1597-1608.
[4]	ZHANG Yifan, GAO Yuan, CHEN Jiquan, HUANG Shuai, HAI Lun, WU Zhengxuan, YANG Liu, DONG Tian. Carbon and Oxygen Isotope Characteristics of Late Cretaceous Lacustrine Dolomite in the Songliao Basin and their Paleoenvironmental Implications [J]. Geoscience, 2023, 37(05): 1243-1253.
[5]	LIANG Qiankun, CHEN Yuelong, WANG Shanhui, YU Yang, YANG Fan. Detrital Zircon U-Pb Age and Hf Isotopes and Their Geological Significance of the Nenjiang River Floodplain Sediments [J]. Geoscience, 2023, 37(03): 529-546.
[6]	XUE Zhongkai, FAN Baocheng, HUANG Haoqing, TANG Weidong, GE Zhanlin, LI Pengwei, HU Jianhui, YANG Xiaoqi, GUO Yongchao, LI Kong. Geochronology and Geochemistry of the Intermediate-basic Dikes in the Beishan Area, Inner Mongolia: Implications for Tectonic Evolution of the Northern Margin of the Tarim Plate [J]. Geoscience, 2023, 37(03): 627-644.
[7]	DENG Ke, WANG Jingui, DONG Yujie, HE Linwu, YUAN Renhua, ZHANG Zeguo, CHEN Shouguan, XIN Tang. Genesis and Geological Significance of Late Cretaceous Intermediate Intrusions in Sangye, Tibet [J]. Geoscience, 2023, 37(02): 375-389.
[8]	ZHANG Hongyu, YANG Liming, SU Li, SONG Shuguang, WANG Dachuan. LA-ICP-MS Monazite U(Th)-Pb Dating and Geological Applications [J]. Geoscience, 2023, 37(02): 443-462.
[9]	REN Chenghao, SHE Hongquan, KE Changhui, SUN Yandong, ZHOU Qunmao, JIAO Tianlong, LI Baoliang. Study on the Intrusive Ages of the Granites and Metallogenic Age from Zhongteng Copper Deposit, Pinghe, Fujian Province [J]. Geoscience, 2022, 36(06): 1447-1464.
[10]	TANG Mingying, HUA Lei, DING Zhengjiang, DONG Zhenkun, WANG Weixiao, ZHAI Xiaozhi, WANG Rujie, ZHENG Chenglong. Geochemical Characteristics and Metallogenic Mechanism of the Wulade Graphite Deposit in the Qimantage Area, East Kunlun [J]. Geoscience, 2022, 36(06): 1475-1485.
[11]	LI Wenxia, ZHAO Zhidan, WANG Xiaoli, YAN Rong, LU Yuanfa. Re-Os Isotopic Characteristics and Geological Significance of Mafic Rocks from the Xigaze Ophiolite,Tibet [J]. Geoscience, 2022, 36(06): 1503-1512.
[12]	LIU Siyi, GAO Ping, XIAO Xianming, LIU Ruobing, QIN Jing, YUAN Tao, WANG Xu. Study on Organic Petrology Characteristics of the Wufeng-Longmaxi Formation Black Shale, Sichuan Basin [J]. Geoscience, 2022, 36(05): 1281-1291.
[13]	LI Erting, MA Wanyun, LI Ji, MA Xinxing, PAN Changchun, ZENG Lifei, WANG Ming. Thermal Simulation Experiment for Hydrocarbon Generation: A Case Study of Jurassic Coal from the Southern Margin of Junggar Basin [J]. Geoscience, 2022, 36(05): 1313-1323.
[14]	ZHAI Jiayu, ZHANG Songhang, TANG Shuheng, GUO Huiqiu, LIU Bing, JI Chaoqi. Origin and Productivity Response of Gas and Water in Coalbed Methane Field of Yuwang Block at Laochang, Yunnan Province [J]. Geoscience, 2022, 36(05): 1341-1350.
[15]	DU Baofeng, ZHANG Rongzhen, YANG Changqing, LI Shanpo, TAN Heyong, ZHU Hongyun. Sulfur and Lead Isotopic Compositions of Zebuxia Pb-Zn Deposit in Tibet:Implications for the Sources of Ore-forming Material [J]. Geoscience, 2022, 36(04): 1138-1145.