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| 贵州省盘县架底金矿床成矿地质条件及找矿方向 | |
| 引用本文： | 张兵强,赵富远,杨清毫,黄毅,李俊海,刘松.贵州省盘县架底金矿床成矿地质条件及找矿方向[J].吉林大学学报(地球科学版),2022,52(1):94-108. |
| 作者姓名： | 张兵强 赵富远 杨清毫 黄毅 李俊海 刘松 |
| 作者单位： | 1.贵州省地质矿产勘查开发局一0五地质大队，贵阳550018 2.自然资源部基岩区矿产资源勘查工程技术创新中心，贵阳550001 |
| 基金项目： | 贵州省地矿局地质科研项目;贵州省科技计划项目;国家自然科学基金 |
| 摘 要： | 架底金矿床位于贵州省莲花山背斜南东翼，距背斜核部3 km，是近年来在国内发现的与峨眉山玄武岩密切相关的第一个大型原生金矿床。架底金矿床与黔西南其他金矿床类似，属微细粒浸染型，成矿流体来源具有岩浆水的特点。玄武岩是矿区最主要的赋矿地层，玄武质火山角砾岩是矿区最主要的容矿岩石。矿化趋势分析显示：莲花山背斜（次级揉褶）与近东西向复式背斜的叠加区是有利的成矿部位，控制矿床中各矿体的分布规律及产出特征；近东西向复式背斜直接控制了矿体近东西向展布的特点，且越靠近莲花山背斜核部，矿体品位越高、厚度越大。原生晕地球化学分析指示：在矿区目前已发现矿体的顶部可能还存在断控型或层控型金矿体；源自深部的含金热液沿深大断裂上涌至一定位置后沿层间破碎带由东向西运移，且至少经历了2次主要的成矿作用阶段。综合研究认为整个莲花山地区具有较好的找矿远景，区内金矿床在南北方向可能按一定规律呈等距、不等距分布，推测东西方向受叠加褶皱控制的有利成矿区距莲花山背斜核部超过5 km。区内除峨眉山玄武岩外，在上二叠统龙潭组以及三叠系中都有可能在构造有利、岩性适宜的部位形成层控型或断控型金矿体。 |
| 关 键 词： | 同位素 矿化规律 成矿预测 架底金矿床 盘县 |
| 收稿时间： | 2020-11-17 |
Metallogenic Geological Conditions and Prospecting Direction of Jiadi Gold Deposit in Panxian County,Guizhou Province |
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| Zhang Bingqiang,Zhao Fuyuan,Yang Qinghao,Huang Yi,Li Junhai,Liu Song.Metallogenic Geological Conditions and Prospecting Direction of Jiadi Gold Deposit in Panxian County,Guizhou Province[J].Journal of Jilin Unviersity:Earth Science Edition,2022,52(1):94-108. | |
| Authors: | Zhang Bingqiang Zhao Fuyuan Yang Qinghao Huang Yi Li Junhai Liu Song |
| Institution: | 1. No.105 Geological Team,Guizhou Bureau of Geology and Mineral Exploration and Development, Guiyang 550018, China 2. Innovation Center of Ore Resources Exploration Technology in the Region of Bedrock,Ministry of Natural Resources, Guiyang 550001, China |
| Abstract: | Jiadi gold deposit is located in the south eastern wing of Lianhuashan anticline, 3 km away from the anticline core. It’s the first large primary gold deposit closely related to Emeishan basalt found in China in recent years. Similar to other gold deposits in southwest Guizhou, Jiadi gold deposit belongs to fine grained disseminated gold deposit, and the source of ore forming fluid is characterized by magmatic water. Basalt is the main ore bearing stratum in the mining area, and black tortoise volcanic breccia is the main ore hosting rock. Through the analysis of mineralization trend, the superimposed area of Lianhuashan anticline (marginal fold) and the near EW anticlinorium is the favorable ore forming position, which controls the distribution and occurrence characteristics of the ore bodies in the deposit, and the near EW anticlinorium directly controls the characteristics of the near EW distribution of the ore body: the closer to the core of Lianhuashan, the higher the ore grade and the thicker the ore body. Based on the analysis of the primary halo geochemistry, there may still be gold orebodies bound by faulted or strata on the top of the ore body. It is considered that the gold bearing hydrothermal solution came from the deep, rose to a certain position along the deep fault, and migrated from east to west along the interlayer fracture zone, experiencing at least two major metallogenic stages. The comprehensive study shows that the whole Lianhuashan area has a better prospecting prospect, and the gold deposits in this area may be distributed in an isometric or unequal interval pattern in the SN direction, and the favorable ore forming area controlled by superimposed folds are estimated to be more than 5 km away from the core of Lianhuashan anticline. Except for Emeishan basalt, the strata bound or fault controlled gold ore bodies may be formed in the Upper Permian Longtan Formation and Triassic strata in favorable structure and suitable lithology. |
| Keywords: | isotope mineralization regularity metallogenic prediction Jiadi gold deposit Panxian County |
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