光谱学与光谱分析 |
|
|
|
|
|
The Enrichment Characteristic and Mechanism of Gold-Silver Minerals in Submarine Hydrothermal Sulfides from the Ultra-Slow-Spreading SWIR |
WANG Yan1, SUN Xiao-ming1,2,3*, WU Zhong-wei1,2, DENG Xi-guang4, DAI Ying-zhi2, LIN Zhi-yong2 |
1. School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China 2. Department of Earth Sciences, Sun Yat-sen University, Guangzhou 510275, China 3. Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510275, China 4. Guangzhou Marine Geological Survey, Guangzhou 510760, China |
|
|
Abstract In the present study, content and occurrence of Au, Ag in three submarine hydrothermal sulfide samples from the ultra-slow-spreading Southwest Indian Ridge (SWIR) were studied by using inductively coupled plasma-atomic emission spectrometry (ICP-AES), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The results of ICP-AES show that all of the samples have signs of Au-Ag enrichment. By SEM/EDS, we discovered a mass of gold-silver minerals in the samples. In S27-4, gold occurs as irregular-shaped native gold and electrum grains in sulfides or between crystal particles. However, we discovered lots of Au-independent silver minerals except parts of electrum in S35-22. EDS results of silver minerals indicate that silver minerals closely related with halogen element, inferring that silver minerals may be silver halides. Electrum in S35-22 can be absorbed at the surface or crystal edge of pyrite besides occurring in or between sulfides as S27-4, supposed to be related to surface defect in pyrite. Electrum is the only Au-Ag mineral discovered in S35-17. These electrum gains occur as inclusion gold, absorbed gold or fissure gold. In addition, there are different Au-Ag mole ratios of electrum in three samples, indicating distinct hydrothermal conditions. In the base of research before, we consider that AgCl-2 is the dominant complex of silver in ore-forming fluid of S27-4, however, gold is transported as AuCl-2 transforming to AuHS0, indicating that hydrothermal fluids decreased from high-moderate to moderate-low temperature and conductive cooling played an important role in this process. Similar enrichment mechanism happened in S35-22, but silver halides discovered in S35-22 suggest a higher temperature and chloride in the early stage. However, The enrichment of electrums in black smoke sample(S35-17) relates to mixing of hydrothermal fluids and seawater.
|
Received: 2013-06-13
Accepted: 2013-10-15
|
|
Corresponding Authors:
SUN Xiao-ming
E-mail: eessxm@mail.sysu.edu.cn
|
|
[1] Herzig P M, Hannington M D. Ore Geology Reviews, 1995,10: 95. [2] Corliss J B, Dymond J, Gordon L I, et al. Science, 1979,203: 1073. [3] Hannington M D, Thompson G, Rona P A, et al. Nature, 1988,333: 64. [4] Hannington M D, Tivey M K, Larocque A C, et al. Canadian Mineralogist, 1995,33: 1285. [5] Herzig P M, Hannington M D, Fouquet Y, et al. Economic Geology, 1993,88: 2182. [6] Binns R A, Scott S D, Bogdanov Y A, et al. Economic Geology, 1993,88: 2122. [7] Murphy P J, Meyer G. Economic Geology, 1998,93: 1076. [8] Moss R, Scott S D. Canadian Mineralogist, 2001,39: 957. [9] German C R, Baker E T, Mevel C, et al. Nature, 1998,395: 490. [10] Münch U, Lalou C, Halbach P, et al. Chemical Geology, 2001,177: 341. [11] TAO Chun-hui, LI Huai-ming, HUANG Wei, et al(陶春辉, 李怀明, 黄 威,等). Chinese Science Bulletin(科学通报), 2011,56(28-29): 2413. [12] Georgen J E, Lin J, Dick H J. Earth and Planetary Science Letters, 2001,187(3-4): 283. [13] LI Xiao-hu, CHU Feng-you, LEI Ji-jiang, et al(李小虎, 初凤友,雷吉江,等). Marine Geology & Quaternary Geology(海洋地质与第四纪地质), 2008, 28: 283. [14] Hannington M D, Herzig P M, Scott S D, et al. Marine Geology, 1991,101: 217. [15] Meyer G, Cambon P, Etoubleau J, et al. Journal of Radioanalytical and Nuclear Chemistry, 2000,244: 583. [16] WU Zhong-wei, SUN Xiao-ming, DAI Ying-zhi, et al(吴仲玮, 孙晓明, 戴瑛知,等). Acta Petrologica Sinica(岩石学报), 2011,27(12): 3749. [17] YE Jun, SHI Xue-fa, YANG Yao-min, et al(叶 俊, 石学法, 杨耀民,等). Acta Mineralogica Sinica(矿物学报), 2011,31(1): 17. [18] Moss R, Scott S D, Binns R A. Economic Geology, 2001,96: 91. [19] Benning L G, Seward T M. Geochimica et Cosmochimica Acta, 1996,60: 1849. [20] Pal’yanova G A. Chemical Geology, 2008,255: 399. |
[1] |
ZHAO Ling-yi1, 2, YANG Xi3, WEI Yi4, YANG Rui-qin1, 2*, ZHAO Qian4, ZHANG Hong-wen4, CAI Wei-ping4. SERS Detection and Efficient Identification of Heroin and Its Metabolites Based on Au/SiO2 Composite Nanosphere Array[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(10): 3150-3157. |
[2] |
GAO Ran1, 2, CHEN Quan-li1, 3*, REN Yue-nan4, BAO Pei-jin1, HUANG Hui-zhen1. Study on the Gemmological and Spectral Characteristics of Emeralds From Kagem, Zambia[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(10): 3186-3192. |
[3] |
WANG Yan1, HUANG Yi1, 2*, YANG Fan1, 2*, WU Zhong-wei2, 3, GUAN Yao4, XUE Fei1. The Origin and Geochemical Characteristics of the Hydrothermal Sediments From the 49.2°E—50.5°E Hydrothermal Fields of the Southwest Indian Ocean Ultra-Slow Spreading Ridge[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(09): 2868-2875. |
[4] |
FENG Hai-kuan1, 2, YUE Ji-bo3, FAN Yi-guang2, YANG Gui-jun2, ZHAO Chun-jiang1, 2*. Estimation of Potato Above-Ground Biomass Based on VGC-AGB Model and Hyperspectral Remote Sensing[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(09): 2876-2884. |
[5] |
LU Yan-hua, XU Min-min, YAO Jian-lin*. Preparation and Photoelectrocatalytic Properties Study of TiO2-Ag
Nanocomposites[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(04): 1112-1116. |
[6] |
LIU Shi-jie1, ZHU Yao-di1, 2, LI Miao-yun1, 2*, ZHAO Gai-ming1, 2, ZHAO Li-jun1, 2, MA Yang-yang1, 2, WANG Na1. Raman Spectroscopic Characteristic Structure Analysis and Rapid Identification of Food-Borne Pathogen Spores Based on SERS Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(09): 2774-2780. |
[7] |
DENG Xian-ze1, 2, DENG Xi-guang1, 2*, YANG Tian-bang1, 2, CAI Zhao3, REN Jiang-bo1, 2, ZHANG Li-min1, 2. To Reveal the Occurrence States and Enrichment Mechanisms of Metals in Modules From Clarion-Clipperton Zone in Eastern Pacific by High
Resolution Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(08): 2522-2527. |
[8] |
FU Ying-ying, ZHANG Ping, ZHENG Da-wei , LIN Tai-feng*, WANG Hui-qin, WU Xi-hao, SONG Jia-chen. Preparation and SERS Performance of Au-Nylon Flexible Membrane Substrate[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(03): 692-698. |
[9] |
XIE Xue-wei2, ZHONG Hao-chen2, CHEN Zhen-cheng2, HE Min2, ZHU Jian-ming1*. Detection of Advanced Glycosylation End Products by Fluorescence Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(04): 1055-1059. |
[10] |
WANG Shi-xia, HU Tian-yi, YANG Meng. Study on Preparation of Ag-Doped ZnO Nanomaterials and Phase Transition at High Pressure Using Diamond Anvil Cell and Raman Spectra[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(02): 484-488. |
[11] |
SHANG Jie1, 2, HUANG Yuan2, YANG Kai1, CHEN Bao-wei1, LIU Chun-hua2, YANG Yi1. Progress of Thomson Scattering Diagnostic on HL-2A Tokamak[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(02): 333-338. |
[12] |
ZHANG Lei, ZHANG Xia*, WENG Yi-jin, LIU Xiao. Preparation and Properties of Ag/PANI Multifunction Nanozymes[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(11): 3399-3403. |
[13] |
FENG Ai-ming1, WANG Fu-qiang1, ZHANG Hong1*, AN Peng2, LI Yang-hui1, 3, WANG Le1*. Significantly Improved Luminescence Properties of YAG Phosphor via Localized Surface Plasmon Resonance of Nanotitania[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(10): 3081-3085. |
[14] |
KONG De-ming1, 3, LI Yu-meng1, CUI Yao-yao2*, ZHANG Chun-xiang1, WANG Shu-tao1. Correction Methods of Rayleigh Scattering of Three-Dimensional Fluorescence Spectra of Spilled Oil on Sea[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(09): 2791-2797. |
[15] |
WANG Xin-qiang1, 3, GE Hao-ran1, 3, XIONG Wei2, YE Song1, 3, WANG Fang-yuan1, 3, GAN Yong-ying1, 3, WANG Jie-jun1, 3, LI Shu1, 3*. Research on Raman Spectroscopy Measurement Method Based on Spatial Heterodyne[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(07): 2110-2115. |
|
|
|
|