投稿时间：2015-05-27
修订日期：2016-05-05
网络发布日期：2016-08-25
中文摘要:卧龙山锶矿床是江苏省溧水盆地内新发现的热液充填型锶矿床，目前控制规模为中型。矿床地质特征研究表明，卧龙山锶矿床矿体的赋存位置及产状均严格受NW向断裂构造的控制；矿石自然类型以致密块状矿石为主，矿石结构以自形板片状为主，矿石构造以块状、角砾状和网脉状为主；围岩蚀变表现为中低温热液蚀变特征，且沿矿区NW向断裂呈线状分布。根据矿物的世代和穿插关系，将锶矿化划分为天青石-黄铁矿阶段、天青石阶段和方解石-天青石阶段。查明了矿区NW向构造是主要控矿因素，亦是主要找矿标志，而NE向构造是破矿构造。提出了矿区NW向构造是区域主干断裂右行扭动所派生的次级断裂构造；而NE向构造是区域主干断裂左行扭动所派生的次级断裂构造；认为矿区锶矿化发生在主干断裂右行扭动之后，左行扭动之前，并赋存在右行扭动派生的NW向断裂构造中。因此，溧水盆地锶矿勘查重点（找矿方向）应沿着开太-白马山主干断裂开展，找寻其右行扭动派生的NW向构造。
Abstract:The Wolongshan strontium deposit is a hydrothermal-filling type medium-sized strontium deposit recently discovered in the Lishui volcanic basin. The distribution and attitude of the orebodies are controlled by NW-striking faults. The main type of the ore is massive, the dominant texture is in euhedral-granular form, and the ore structure consists mainly of massive, brecciform and stockwork forms. The hydrothermal alteration is characterized by middle-low temperature alteration controlled by the NW-trending faults. The generation and penetrating relationship of minerals show that the ore-forming process of the Wolongshan deposit could be divided into three stages: celestite-pyrite, celestite and calcite-celestite stages. Detailed geological mapping confirms that the NW-trending structure is the main ore-bearing structure, and the NE-striking structure is the ore-breaking structure. The NW-striking fault was formed by the right twisting of the Kaitai-Baimashan fault, while the NE-striking fault was generated during the left twisting. Sr mineralization occurred after the right twisting of the Kaitai-Baimashan fault but before the left twisting, and was distributed in the NW-striking faults formed during the right twisting. This study suggests that the exploration of Sr deposit in the Lishui basin should be focused on the Kaitai-Baimashan fault, and the search for the right twisting derived NW-striking faults might be the prospecting direction in the future.
keywords:geology strontium deposit geological characteristics ore-control factors prospecting direction Lishui basin
文章编号：
中图分类号：618.78
文献标志码：
基金项目:本文获得国家自然科学基金项目（编号：41102123）和中国地质调查局项目（编号：12120114007101）联合资助
引用文本：
陈冬,李鑫,缪柏虎,孙清钟,蔡露明,胡福培.2016.江苏溧水卧龙山锶矿床地质特征及找矿方向[J].矿床地质,35(4):709~723CHEN Dong,LI Xin,MIAO BoHu,SUN QingZhong,CAI LuMing,HU FuPei.2016.Geological characteristics and prospecting direction of Wolongshan strontium deposit in Lishui area,Jiangsu Province[J].Mineral Deposits35(4):709~723
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