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云南者桑金矿地质特征及成因分析
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Abstract:
云南富宁者桑金矿是我国滇黔桂地区典型的卡林型金矿床之一，以者桑金矿中三种不同类型的赋金矿石，即辉绿岩型矿石、泥质板岩或粉砂岩型矿石、泥灰岩型矿石中的载金矿物毒砂和黄铁矿为研究对象，通过镜下观察和电子探针分析，对其进行矿物特征观察和地球化学特征分析。研究发现辉绿岩型矿石中细粒自形毒砂、菱形毒砂及破碎状毒砂的尖端含金性较好，矿化多与硅化和绢云母化有关；泥质板岩或粉砂岩中粗粒自形五角十二面体黄铁矿和脉状黄铁矿含金性较好，矿化多与炭化和硅化密切相关；泥灰岩型矿石中普遍含金，细粒菱形毒砂的含金性较好，矿化多与硅化、碳酸盐化及炭化有关。另外结合前人对者桑金矿矿物包裹体及元素地球化学特征的研究，综合者桑区域地质特征，探讨了三种矿体的成因及成矿模式。
Yunnan Funing Zhesang Gold Mine is one of the typical Carlin-type gold deposits in Yunnan, Guiz-hou and Guizhou regions of my country. There are three different types of gold-bearing ores in Zhesang Gold Mine, namely diabase ore, argillaceous slate or the gold-bearing minerals arsenopyrite and pyrite in siltstone-type ore and marl-type ore are the research objects. Through microscopic observation and electron probe analysis, the mineral characteristics and geochemical characteristics of them are observed. The study found that the fine-grained arsenopyrite, rhombic arsenopyrite, and broken arsenopyrite in diabase ores have good gold-bearing tips, and the mineralization is mostly related to silicification and sericitization; argillaceous slate or siltstone is medium-coarse Granular pentagonal dodecahedral pyrite and vein-shaped pyrite have good gold-bearing properties, and mineralization is mostly closely related to carbonization and silicification; marl-type ores generally contain gold, and fine-grained arsenopyrite contains gold. It has good properties, and mineralization is mostly related to silicification, carbonation and carbonization. In addition, combined with previous studies on the mineral inclusions and element geochemical characteristics of the Zhesang gold deposit, combined with the geological characteristics of the Zhesang area, the genesis and metallogenic models of the three ore bodies are discussed.
| [1] | 赵世启, 袁波, 陈荔湘, 等. 陕西略阳金家河金矿床地质特征及控矿因素分析[J]. 西北地质, 2020, 53(4): 120-129. |
| [2] | 聂爱国. 黔西南卡林型金矿的成矿机制及成矿预测[D]: [博士学位论文]. 昆明: 昆明理工大学, 2007. |
| [3] | 谭仕敏, 施国栋, 雷良奇, 等. 中国卡林型金矿的分布规律及找矿前景[J]. 地质调查与研究, 2007, 30(4): 289-294. |
| [4] | 安生婷, 李培庚, 杜生鹏, 等. 青海柴北缘滩间山地区金龙沟金矿成矿模式总结与找矿前景分析[J]. 西北地质, 2020, 53(4): 99-107. |
| [5] | 冯建川, 吴建刚. 富宁县金坝金矿地质特征及找矿前景[J]. 四川地质学报, 1992(S1): 51-54. |
| [6] | 国家辉, 陈树旺, 崔显德. 金坝金矿床地质特征[J]. 地质与资源, 2001, 10(2): 71-79. |
| [7] | 吴赵全, 王维刚, 何艳丽. 富宁微细浸染型金矿及远景[J]. 云南地质, 2 007, 6(1): 49-55. |
| [8] | 代鸿章. 云南富宁县者桑金矿床成因矿物学研究[D]: [硕士学位论文]. 成都: 成都理工大学, 2012: 1-53. |
| [9] | 代鸿章, 陈翠华, 顾雪祥, 等. 云南省富宁县者桑金矿床成矿流体特征[J]. 现代地质, 2014, 28(5): 893-904. |
| [10] | Hu, R.Z., Fu, S., Huang, Y., et al. (2017) The Giant South China Mesozoic Low-Temperature Metallogenic Domain: Reviews and a New Geodynamic Model. Journal of Asian Earth Sciences, 137, 9-34.
https://doi.org/10.1016/j.jseaes.2016.10.016 |
| [11] | Hu, R.Z., Chen, W.T., Xu, D.R., et al. (2017) Reviews and New Metallogenic Models of Mineral Deposits in South China: An Introduction. Journal of Asian Earth Sciences, 137, 1-8. https://doi.org/10.1016/j.jseaes.2017.02.035 |
| [12] | 熊观, 段威, 唐文春, 杨贵兵, 王焕国, 黄健. 川西北银厂金矿床地球化学特征及成因探讨[J]. 西北地质, 2020, 53(4): 86-98. |
| [13] | 章永梅, 顾雪祥, 摆 祥, 等. 云南富宁者桑金矿床硫铅同位素地球化学特征与成矿物质来源[J]. 地学前缘, 2013, 20(1): 32-39. |
| [14] | 徐国风, 邵洁涟. 黄铁矿的标型特征及其实际意义[J]. 科技述评, 1980, 26(6): 541-546. |
| [15] | 王奎仁. 地球与宇宙成因矿物学[M]. 合肥: 安徽教育出版社, 1989: 122-125. |
| [16] | Bajwah, Z.U., Seccombe, P.K. and Offler, R. (1987) Trace Element Distribution, Co: Ni Ratios and Genesis of the Big Cadia Iron Copper Deposit, New South Wales, Australia. Mineral Deposita, 22, 292-300.
https://doi.org/10.1007/BF00204522 |
| [17] | 苏凤霞, 王晓勇, 贾伟光, 等. 吉林闹枝金矿床黄铁矿的标型特征研究[J]. 黄金, 2003, 24(13): 13-16. |
| [18] | 李国. 卡林型金矿床金的的赋存状态研究——以云南者桑金矿床、贵州水银洞金矿床为例[D]: [硕士学位论文]. 桂林: 桂林理工大学, 2019. |
| [19] | 李国, 皮桥辉, 韦朝文, 等. 云南者桑金矿床富金矿石类型与地球化学特征研究[J]. 山东国土资源, 2019, 35(3): 8-16. |
| [20] | 腾建青. 者桑金矿载金矿物的地球化学特征[Z]: [学士学位论文]. 桂林: 桂林理工大学, 2015: 1-46. |
| [21] | Seward, T.M. (1973) Thio Complexes of Gold and the Transport of Gold in Hydrothermal Ore Solutions. Geochimica et Cosmochimica Acta, 37, 370-399. https://doi.org/10.1016/0016-7037(73)90207-X |
| [22] | Seward, T.M. (1991) The Hydrothermal Geochemistry of Gold. In: Foster, R.P., Ed., Gold Metallogeny and Exploration, Blackie, Glasgow, 37-62. https://doi.org/10.1007/978-1-4613-0497-5_2 |
| [23] | Heinrich, C.A. and Eadington, P.J. (1986) Thermodynamic Predictions of the Hydrothermal Chemistry of Arsenic, Cassiterite-Arsenopyrite-Base Metal Sulfide Deposits. Economic Geography, 181, 511-529.
https://doi.org/10.2113/gsecongeo.81.3.511 |
| [24] | Pokrovski, G.S., Kara, S. and Roux, J. (2002) Stability and Solubility of Arsenopyrite, FeAsS, Incrusta Fluids. Geochimica et Cosmochimica Acta, 66, 2361-2378. https://doi.org/10.1016/S0016-7037(02)00836-0 |
| [25] | Naden, J. and Shepherd, T.J. (1989) Role of Methane and Carbon Dioxide in Gold Deposition. Nature, 342, 793-795.
https://doi.org/10.1038/342793a0 |
| [26] | Groves, D.I. and Foster, R.P. (1991) Archaean Lode Gold Deposits. In: Foster, R.P., Ed., Gold Metallogeny and Exploration, Springer, Berlin, 63-103. https://doi.org/10.1007/978-1-4613-0497-5_3 |
| [27] | Nesbitt, B.E. (1991) Phanerozoic Gold Deposits in Tectonically Active Continental Margins. In: Foster, R.P., Ed., Gold Metallogeny and Exploration, Springer, Berlin, 104-132. https://doi.org/10.1007/978-1-4613-0497-5_4 |
| [28] | Hofstra, A.H. and Cline, J.S. (2000) Characteristics and Models for Carlin-Type Gold Deposit. Reviews in Economic Geology, 13, 163-220. https://doi.org/10.5382/Rev.13.05 |
| [29] | 国家辉. 桂西北超微粒型金矿及其成矿和找矿模式[M]. 北京: 地震出版社, 1992. |
| [30] | 国家辉. 桂西北地区岩浆活动与超微粒型金矿化的关系[J]. 地质与资源, 2000, 9(3): 133-143. |
| [31] | 姚娟, 罗海, 任光明, 等. 云南老寨湾金矿床成矿流体的特征[J]. 资源环境与工程, 2008, 22(2): 163-167. |
| [32] | 王臣兴. 广南-富宁地区金成矿带典型矿床及地质特征[J]. 云南地质, 2008, 27(3): 293-301. |
| [33] | 贾大成, 胡瑞忠. 滇黔桂地区卡林型金矿床成因探讨[J]. 矿床地质, 2001, 20(4): 378-384. |
| [34] | 杨海, 陈治安. 黔西南卡林型金矿地质特征及找矿方向[J]. 有色金属设计, 2020, 47(1): 121-123. |
| [35] | 卢重明. 扬子准地台西南陆缘的活化与右江地槽的形成[J]. 贵州地质, 1986(1): 1-12. |
| [36] | 段新华. 论哀牢山-藤条河断裂-古板块俯冲带[J]. 地质学报, 1981, 55(4): 258-265. |
| [37] | 何彬彬, 顾雪祥. 黔桂盆地演化与微细粒浸染型金成矿作用[J]. 矿物岩石地球化学通报, 2000, 19(4): 279-280. |
