河南桐柏银洞坡金矿床特征及深部找矿前景  

The Geological Characteristics and Deposit in Yindongpo Deep Ore-searching Prospects of Gold Tongbai, Henan Province

作　　者：王宗炜 刘伟芳 刘伟颉 刘国范 王勇 

机构地区：[1]河南省地质矿产勘查局第五地质勘查院,河南郑州450001 [2]河南省地质矿产勘查局第一地质勘查院,河南郑州450001 [3]河南省地质矿产勘查局第三地质矿产调查院,河南信阳464000

出　　处：《资源导刊（地球科技版）》2015年第3期13-18,共6页

摘　　要：河南省桐柏县银洞坡金矿床位于华北板块与扬子板块的接合部位、秦岭多金属成矿带东段桐柏—大别山成矿亚带内，区内构造线呈NWW向展布。矿床严格受新元古界歪头山岩组地层和赋矿构造双重因素控制。矿床地表及浅部主要工业矿体呈鞍状、似层状，分布在歪头山岩组厚层碳质绢云石英片岩内的朱庄背斜（形）转折端、倾伏端的虚脱部位中；随着深部找矿工作的进一步开展，发现原勘探深度标高以下．金矿体不但没有尖灭，反而向深部沿断裂呈似层状稳定延伸，金矿体厚度增大、品位增高，因而显示“三层楼”式成矿模式。扩大了找矿视野，为在该区寻找金多金属矿床开辟了广阔前景。The Henan Yindongpo gold deposit is situated in the conjunction area between the North China plate and yangtze plate, and is in the Tongbai-Dabieshan metallogenic sub-belt east of Qinling polymetallic mineralization belt. This tectonic line extends in NWW direction. The ore-deposit stratum is strictly controlled by Neoproterozoic Waitoushan Formation and ore-bearing structures. The ore deposit earth surface and shallow industry ore show saddie-shape and stratiform. As deep ore-searching going deep, it is found that gold ore does not disappear below former planned deep, besides it downward extend, and the gold ore become much thicker, grade higher, thus it shows a three layer floor metallogenic model.

关 键 词：“三层楼”武成矿模式 矿床特征 深部找矿前景 银洞坡金矿 

分 类 号：P618.510.2[天文地球—矿床学]