Fluid Explosion Breccia Pipe and Gold Supernormal Enrichment in Shuiyindong Gold Ore Deposit, Southwest Guizhou Province
-
摘要: 水银洞金矿床曾被认为是滇黔桂地区最有代表性的微细浸染型金矿(卡林型金矿), 然而矿床的金品位明显高于一般意义上的卡林型金矿床, 且金矿体与气液爆破角砾岩关系密切。气液爆破角砾岩呈垂直筒状产状, 两侧断裂矿化带呈向上扩张的“喇叭口”状成矿空间, 富金矿体紧密围绕角砾岩筒分布。根据野外和显微镜观察, 角砾岩块成分复杂与显著磨圆。气液角砾岩筒的角砾岩显著富集金、稀土、亲地幔过渡元素Ti、Cr、Ni、Co、V等, 以及Zr、Hf等, 明显地区别于围岩, 反映出深源流体快速上升的气液爆破角砾岩的特征, 角砾岩筒实际上具备含金成矿流体的上涌通道的功能。岩筒中早期角砾岩的角砾含 Au达18×10–6, 属于深部金矿体的爆破碎块, 显示出水银洞金矿床可观的深部找矿勘探前景。Abstract: Shuiyindong gold ore deposit is known as a typical fine-grain disseminated gold deposit (Carlin-type gold deposit) in Dian–Qian–Gui area; however, its gold grade is evidently higher than that of the common Carlin-type gold deposit, and its orebody is closely related to fluid explosion breccia.The chief breccia pipe is of a vertical columnar occurrence, the fractural mineralized broken zones on both sides of the pipe form a trumpet shape upwards in the expanded metallogenetic space, and high-grade orebodies are distributed around the pipes.Field investigation and microscopic observation indicated that the composition of breccia was quite complex; its rubbles had good abrasion and showed a space-dependent relationship with high-grade gold deposits.The pipe breccias were rich in Au, REE, and siderophile transition elements including Ti, Cr, Ni, Co, V, Zr, and Hf, and were evidently different from the surrounding rocks, reflecting the features of fluid explosion breccia resulting from the rapid uplifting of deep resource fluid, that is, the breccia pipes are the upwelling path of gold metallogenetic fluid.The rubble comprising early breccia in the pipe was of 18×10–6 gold grade, likely from the explosion fragment of the deep gold orebody, revealing considerable gold prospects in the depths of the Shuiyindong gold ore deposit.
-
-
贵州省地质调查院.2017.中国区域地质志·贵州志[M].北京:地质出版社.
贵州紫金矿业股份有限公司.2014.贵州省贞丰县水银洞金矿详查地质报告[R].贵州贞丰: 贵州紫金矿业股份有限公司.
国际地层委员会.2020.国际年代地层表[EB/OL].国际地层委员会 IUGS.[2020-04-03].https://stratigraphy.org/timescale/.
韩雪, 刘凌云, 陈仁, 唐佐其, 叶太平, 代雅然, 陈建书.2021.黔南独山地区早泥盆世事件沉积记录及地质意义[J].地球学报, 42(6): 814-822.
吕青, 焦永鑫, 葛跃进, 肖丙建, 褚志远, 刘淑桢.2021.基于红外光谱-拉曼光谱研究山东郯城砂矿的金刚石及包裹体类型[J].地球学报, 42(6): 895-906.
卿敏, 韩先菊.2002.隐爆角砾岩型金矿研究述评[J].黄金地质, 8(2): 1-7.
邱小平, 蓝岳彰, 刘羽.2010.紫金山金铜矿床深部成矿作用研究和找矿前景评价的关键[J].地球学报, 31(2): 209-215.
邱小平, 孟凡强, 于波, 任卫波.2013.黔西南灰家堡金矿田成矿构造特征研究[J].矿床地质, 32(4): 783-793.
邱小平.2004.两广云开大山地区开合旋回转换与金成矿作用的关系[J].地质通报, 23(3): 272-278.
夏勇, 张瑜, 苏文超, 陶琰, 张兴春, 刘建中, 邓一明.2009.黔西南水银洞层控超大型卡林型金矿床成矿模式及成矿预测研究[J].地质学报, 83(10): 1473-1482.
谢卓君, 夏勇, CLINE J, 谭亲平, 李松涛, 赵亦猛, 韦东田, 王泽鹏, 闫俊.2019.中国贵州与美国内华达卡林型金矿对比及对找矿勘查的指示作用[J].矿床地质, 38(5):1077-1093.
鄢明才, 迟清华, 顾铁新, 王春书.1997.中国东部地壳元素丰度与岩石平均化学组成研究[J].物探与化探, 21(6):451-459.
赵东杰, 王学求.2020.滇黔桂卡林型金矿区水系沉积物和岩石金含量与时空分布[J].地球学报, 41(3): 407-419.
CLINE J S, HOFSTRA A H, MUNTEAN J L, TOSDAL R M, HICKEY K A.2005.Carlin-type gold deposits in Nevada:Critical geologic characteristics and viable mod-els[C]//Economic Geology 100th Anniversary Volume.Littleton: Society of Economic Geologists: 451-484.
EMSBO P, HOFSTRA A H, LAUHA E A, GRIFFIN G L, HUTCHINSON R W.2003.Origin of high-grade gold ore, source of ore fluid components, and genesis of the meikle and neighboring carlin-type deposits, Northern Carlin Trend, Nevada[J].Economic Geology, 98(6): 1069-1105.
Guizhou Geological Survey.2017.Regional geology of China-Guizhou[M].Beijing: Geological Publishing House(in Chinese).
Guizhou Zijin Mining GroupCo., Ltd.2014.The detail exploration report of Shuiyindong gold mine, Zhenfeng County, Guizhou Province[R].Zhenfeng, Guizhou: Guizhou Zijin Mining Group Co., Ltd.(in Chinese).
HAN Xue, LIU Ling-yun, CHEN Ren, TANG Zuo-qi, YE Tai-ping, DAI Ya-ran, CHEN Jian-shu.2021.Early Devonian Event-stratigraphic Records and Geological Implications in the Dushan Area, Southern Guizhou Province[J].Acta Geoscientica Sinica, 42(6): 814-822(in Chinese with English abstact).
HART R J, ANDDREOLI M A G, REIMOLD W U, TREDOUX M.1991.Aspects of the dynamic and thermal metamorphic history of the Vredefort cryptoexplosion structure: implications for origin[J].Tectonophysics, 192(3-4): 313-331.
HERRMANN A G.1970.Yttrium and Lanthanides[M].Berlin:Springer-Verlag: 57-71.
HOFSTRA A H, JOHN D A, THEODORE T G.2003.A special issue devoted to gold deposits in Northern Nevada: Part 2.Carlin-Type Deposits[J].Economic Geology, 98(6): 1063-1067.
International Commission of Stratigraphy.2020.New international chronostratigraphic chart[EB/OL].[2020-04-03].https://stratigraphy.org/timescale/.
LÜ Qing, JIAO Yong-xin, GE Yue-jin, XIAO Bing-jian, CHU Zhi-yuan, LIU Shu-zhen.2021.A Study of Types of Diamonds and Inclusions in Tancheng Placer of Shandong Province Based on Infrared and Raman Spectroscopy[J].Acta Geoscientica Sinica, 42(6): 895-906(in Chinese with English abstact).
MCPHIE J, KAMENETSKY V S, CHAMBEFORT I, EHRIG K, GREEN N.2011.Origin of the supergiant Olympic Dam Cu-U-Au-Ag deposit, South Australia: Was a sedimentary basin involved?[J].Geology, 39(8): 795-798.
QING Min, HAN Xian-ju.2002.A commentary of cryptoexplosion breccia type gold deposits[J].Gold Geology, 8(2): 1-7(in Chinese with English abstract).
QIU Xiao-ping, LAN Yue-zhang, LIU Yu.2010.The key to the study of deep mineralization and the evolution of ore-prospecting potential in the Zijinshan gold and copper deposit[J].Acta Geoscientica Sinica, 31(2): 209-215(in Chinese with English abstract).
QIU Xiao-ping, MENG Fan-qiang, YU Bo, REN Wei-bo.2013.Research on metallogenic regulation of gold-rich deposits and features of metallogenic structure in Huijiabao gold field, Southwest of Guizhou, China[J].Mineral Deposits, 32(4):783-793(in Chinese with English abstract).
QIU Xiao-ping.2004.Relationship between gold mineralization and opening-closing cycle transition in the Yunkaidashan area, South China[J].Geological Bulletin of China, 23(3):272-278(in Chinese with English abstract).
SU Wen-chao, HU Rui-zhong, XIA Bin, XIA Yong, LIU Yu-ping.2009.Calcite Sm-Nd isochron age of the Shuiyindong Carlin-type gold deposit, Guizhou, China[J].Chemical Geology, 258(3-4): 269-274.
TAN Qin-ping, XIA Yong, XIE Zhuo-jun, WANG Ze-peng, WEI Dong-tian, ZHAO Yi-meng, YAN Jun, LI Song-tao.2019.Two hydrothermal events at the Shuiyindong carlin-type gold deposit in Southwestern China: Insight from Sm-Nd dating of fluorite and calcite[J].Minerals, 9(4): 230, doi.org/10.3390/min9040230.
WILSHIRE H G, HOWARD K A.1968.Structural pattern in central uplifts of cryptoexplosion structures as typified by sierra madera[J].Science, 162(3580): 258-261.
XIA Yong, ZHANG Yu, SU Wen-chao, TAO Yan, ZHANG Xing-chun, LIU Jian-zhong, DENG Yi-min.2009.Metallogenic model and prognosis of the Shuiyindong super-large stratabound carlin-type gold deposit, Southwestern Guizhou Province, China[J].Acta Geologica Sinica, 83(10): 1473-1482(in Chinese with English abstract).
XIE Zhuo-jun, XIA Yong, CLINE J, TAN Qin-ping, LI Song-tao, ZHAO Yi-meng, WEI Dong-tian, WANG Ze-peng, YAN Jun.2019.A comparison between Carlin-type Au deposits in Guizhou of China and Nevada of USA and its implications for exploration[J].Mineral Deposits, 38(5): 1077-1093(in Chinese with English abstract).
YAN Ming-cai, CHI Qing-hua, GU Tie-xin, WANG Chun-shu.1997.Chemical compositions of continental crust and rocks in Eastern China[J].Geophysical and Geochemical Exploration, 21(6): 451-459(in Chinese with English abstract).
ZHAO Dong-jie, WANG Xue-qiu.2020.The concentrations and temporal-spatial distribution of gold in stream sediments and rocks in the carlin type gold ore districts of Yunnan–Guizhou–Guangxi region[J].Acta Geoscientica Sinica, 41(3): 407-419(in Chinese with English abstract).
-
计量
- 文章访问数: 82
- PDF下载数: 8
- 施引文献: 0
下载: