|
|
云南省寻甸县没租哨磷矿床“三位一体”成矿特征与勘查技术
|
Abstract:
寻甸没租哨大型磷矿床的勘探发现与近年业界新突破的“云南省镇雄县羊场–芒部地区磷矿”超大型矿床共同进一步验证了区域磷矿带向NE延展的分布规律，为区域寻找隐伏磷矿床呈现了空间和方向。本文运用“勘查区找矿预测理论与方法”进行典型矿床研究。从北至南形成硝滩–羊场、九龙–会泽、昆明–华宁三大聚磷盆地典型矿床，分别以镇雄县羊场磷矿、寻甸县没租哨磷矿、晋宁县昆阳磷矿为代表，从成矿地质体、成矿构造系统与成矿结构面，以及成矿作用特征标志“三位一体”进行对比研究。以早寒武世含磷岩系为成矿地质体，以中宜村段碳酸盐岩、硅质岩及磷块岩含磷岩系为主要成矿构造岩性岩相界面，梳理沉积成矿作用特征标志，建立“三位一体”地质模型。总结形成了快速找矿技术方法：“沉积盆地建造(成磷盆地) + 层位 + 岩性界面(标志层) + 磷矿层 + 钻探”。
The exploration and discovery of the Xundian Mozushao large-scale phosphorus deposit and the new breakthrough in the industry in recent years, the super-large phosphorus deposit in the Yangchang-Mangbu area of Zhenxiong County, Yunnan Province, have further verified the distribution law of the regional phosphorus belt extending to NE, and presented the space and direction for the regional search for concealed phosphorus deposits. In this paper, the theory and method of prospecting prediction in exploration area are used to study typical deposits. From north to south, three typical deposits of phosphate-accumulating basins, Xiaotan-Yangchang, Jiulong-Huize and Kunming-Huaning, are formed. The Yangchang phosphate deposit in Zhenxiong County, the Mozuishao phosphate deposit in Xundian County and the Kunyang phosphate deposit in Jinning County are taken as the representatives. The ore-forming geological body, ore-forming structural system and ore-forming structural plane, as well as the “three-in-one” of ore-forming characteristics are compared and studied. Taking the Early Cambrian phosphorus-bearing rock series as the metallogenic geological body, and the carbonate rock, siliceous rock and phosphorus-bearing rock series of Zhongyicun section as the main metallogenic structural lithology and lithofacies interface, the characteristics of sedimentary mineralization are sorted out, and the “three-in-one” geological model is established. A rapid prospecting technology method was summarized “sedimentary basin formation (phosphorus-forming basin) + horizon + lithologic interface (marker layer) + phosphate rock layer + drilling”.
| [1] | 岳维好, 黄艳华, 刀听红, 等. 上扬子西南缘云南镇雄县羊场超大型优质磷矿地质特征及资源潜力[J]. 地质通报, 2022, 41(5): 846-856. |
| [2] | 岳维好, 杨志鲜, 蔡章杨, 等. 中国矿产志. 云南卷. 化工矿产[M]. 北京: 地质出版社, 2020. |
| [3] | 陈瑞红, 赵锴. 滇东昆阳磷矿成矿物质来源及其沉积环境[J]. 矿产与地质, 2021, 35(1): 70-75, 89. |
| [4] | 候明才, 李凤杰, 陈安清, 等. 岩相古地理基础和工作方法[M]. 北京: 地质出版社, 2023. |
| [5] | 邓小林, 姚超美, 王吉平, 等. 扬子地区磷矿成矿规律[J]. 化工矿产地质, 2009, 31(1): 1-12. |
| [6] | 秦欢, 周骞, 洪托, 等. 云南省镇雄县羊场磷矿地球化学特征及其沉积环境分析[J]. 地质找矿论丛, 2022, 37(3): 259-269. |
| [7] | 严清高, 李超, 江小均. 滇中昆阳磷矿成矿时代及沉积环境Re-Os同位素示踪研究[J]. 2018, 37(4): 462-474. |
| [8] | 吕俊, 让昊, 郭阳, 等. 云南镇雄县羊场磷矿地质特征及沉积环境浅析[J]. 云南地质, 2021, 41(1): 76-82. |
| [9] | 徐林刚, Bernd Lehmann, 张锡贵, 等. 云南昆阳磷矿黑色页岩微量元素特征及其地质意义[J]. 岩石学报, 2014, 30(6): 1817-1827. |
| [10] | 崔文东, 曾祥谦, 杨泽刚, 等. 云南省寻甸县没租哨磷矿地质特征及成矿规律[J]. 四川地质学报, 2012(S2): 169-173. |
| [11] | 张贵平, 罗洪昌, 肖亚旭, 等. 云南省寻甸县没租哨磷矿勘探报告[R]. 大理: 云南省有色地质局三一〇队, 2022. |
| [12] | 曾允孚, 沈丽娟, 何廷责. 滇东磷块岩的沉积环境和成矿机理[J]. 矿产与地质, 1989, 9(2): 45-59. |
| [13] | 叶天竺, 吕志成, 庞振山, 等. 勘查区找矿预测理论(总论) [M]. 北京: 地质出版社, 2014. |
| [14] | 杨帆, 肖荣阁, 夏学惠. 昆阳磷矿沉积环境与矿床地球化学[J]. 地质与勘探, 2011, 47(2): 294-303. |
| [15] | 邓小林, 姚超美, 江新华, 等. 川西南-滇东北地区磷矿的形成与富集[J]. 化工矿产地质, 2007, 29(3): 139-140. |
