江苏溧水爱景山锶矿隐伏断裂构造控矿作用及找矿预测

金属矿山 ›› 2025, Vol. 55 ›› Issue (8): 227-235.

江苏溧水爱景山锶矿隐伏断裂构造控矿作用及找矿预测

刘新光¹ 　陆振云¹ 　刘雯雨¹ 　范飞鹏² 　杨献忠² 　骆光新¹ 　吴正兵¹

1. 南京金焰锶业有限公司,江苏南京 211211;2. 中国地质调查局南京地质调查中心,江苏南京 210016

出版日期:2025-09-15 发布日期:2025-09-16
通讯作者: 陆振云(1990—),男,工程师。
作者简介:刘新光(1970—),男,工程师。
基金资助:
中国地质调查局地质调查项目(编号:DD20230029,DD20240202701);南京金焰锶业有限公司项目(编号:JYSY2019001)

Control of Hidden Fault Structures on the Orebodies and Prospecting Prediction of Aijingshan Strontium Deposit in Lishui,Jiangsu

LIU Xinguang ¹ 　 LU Zhenyun ¹ 　 LIU Wenyu ¹ 　 FAN Feipeng ² 　 YANG Xianzhong ² LUO Guangxin ¹ 　 WU Zhengbing ¹

1. Nanjing Jinyan Strontium Industry Co. ,Ltd. ,Nanjing 211200,China; 2. Nanjing Center,China Geological Survey,Nanjing 210016,China

Online:2025-09-15 Published:2025-09-16

摘要/Abstract

摘要： 溧水爱景山锶矿床是长江中下游成矿带溧水火山岩盆地内目前唯一井下开采的锶矿床,其中 Sr Ⅱ脉状矿体是该矿床的主矿体。实际探矿及采矿过程发现,Sr Ⅱ矿体的展布特征有时与勘查资料并不一致,制约了探矿工程布置和采矿进展。以该矿-230 m 中段为例,结合隐伏断裂构造分布相关调查成果,分析了构造特征、属性及形成的先后关系、构造对矿体的控制作用。研究表明:矿区早期 NW 向 F2 和 F7 断裂构造既是导矿构造,又是控矿构造,并分别控制了矿体的下盘和上盘边界。受区域构造活动影响,区域 NW 向断裂构造派生形成的近 EW 向逆冲断裂、压性或平移断裂,是矿体膨大缩小、分支复合、尖灭再现的主要构造,是破矿构造,而派生的 NE 张性断裂构造,规模较小,对矿体破坏甚微。结合围岩、矿体地质特征变化以及上述隐伏构造控矿规律,开展了找矿实践并取得了显著进展,反映出强化隐伏断裂构造控矿规律分析,对于提升找矿预测效率具有重要作用。

关键词: 锶矿床　矿体地质特征　隐伏断裂构造　找矿预测　溧水火山岩盆地

Abstract: The Aijingshan strontium deposit in Lishui District,Nanjing City is the only strontium deposit currently being mined in Lishui Volcanic Basin of the Middle and Lower Reaches of the Yangtze River Metallogenic Belt. The Sr Ⅱ veinshaped orebody is the main orebody of the deposit. In actual exploration and mining processes,it has been found that the distribution characteristics of Sr Ⅱ orebody is sometimes inconsistent with exploration data,which restricts the layout of exploration engineering and mining progress. Taking the being mined -230 m section of the deposit as an example and combined with the relevant investigation results of the distribution of hidden fault structures,the structural characteristics,attributes,and formation sequence,as well as the control of the structures on the orebody are analyzed in the paper. It is believed that the early NW oriented F2 and F7 fault structures in the ore district were not only ore-guiding structures,but also ore-controlling structures,and separately control the lower and upper boundaries of the orebody. Affected by multiple periods of regional tectonic activity,near EW trending thrust,compressive or translational fault structures derived from NW trending fault structures are main fault structures that cause the swelling and shrinking,branching and recombination,and pinching out and reappear of the formed orebody,which are ore-breaking structures. The NE open fault structures derived from NW trending fault structures with a small scale have minimal damage to the orebody. Based on the changes in geological characteristics of wall rocks and orebodies,as well as the hidden structural control laws mentioned above,significant progress has been made in the exploration practice. Strengthening the analysis of the hidden fault structural control laws would have an important significance for effectively improving the prospecting prediction.

Key words: strontium deposit,geological characteristics of orebody,hidden fault structure,prospecting prediction,Lishui volcanic basin ,

中图分类号:

P612

刘新光　陆振云　刘雯雨　范飞鹏　杨献忠　骆光新　吴正兵. 江苏溧水爱景山锶矿隐伏断裂构造控矿作用及找矿预测 [J]. 金属矿山, 2025, 55(8): 227-235.

LIU Xinguang 　 LU Zhenyun 　 LIU Wenyu 　 FAN Feipeng 　 YANG Xianzhong 　 LUO Guangxin 　 WU Zhengbing . Control of Hidden Fault Structures on the Orebodies and Prospecting Prediction of Aijingshan Strontium Deposit in Lishui,Jiangsu[J]. Metal Mine, 2025, 55(8): 227-235.

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