贵州省盘县陇英大地金矿床成矿地质特征及找矿评价

通过对贵州省盘县陇英大地金矿床金矿矿区地层、构造、矿体特征、矿石特征等方面的研究,初步认为该区金矿体主要产于峨眉山玄武岩组一段及二段玄武质熔岩底部,受断层旁侧的节理、裂隙控制金矿体在断层破碎带内呈顺层和穿层两种状态产出。此外,通过对贵州省盘县地区峨眉山玄武岩底部和玄武岩之间的凝灰岩中的微细粒浸染型金矿床的研究,认为此类金矿的区域分布受控于峨眉山玄武岩及其边缘凝灰岩分布区;区域性控矿构造如扬子陆块西南缘的深部构造和区域性深大断裂,控制了金矿成矿及矿体的形成和分布,局部性构造决定了矿体的空间分布及产出特征。最后提出在该区寻找相同类型金矿的找矿标志及找矿远景。

The Ore-forming Geological Characteristics of Dadi Gold Deposit in Longying, Panxian and Assessment for Prospecting

Based on the study of ore mining formation,structure,orebody characteristics,ore characteristics of Dadi gold deposit in Longying,Panxian,it is considered that the gold ore mainly originated in the bottom of connection basaltic lava of Emeishan basalt group period one and two.Jointed by lateral fault,fissures ore bodies in the fault fracture zone are output in the state of bedding fault and fault.Besides,according to the study on micro-disseminated gold deposits in tuff existed between the bottom of Emeishan basalt and basalt in Panxian,Guizhou,we believe that the area distribution of this kind of gold is decided by the area distribution of the Emeishan basalts and its edge of tuff.The formation and distribution of Gold mineralization and ore body are controlled by Regional ore-controlling structure,such as the southwestern margin of Yangtze block deep structures and regional deep fault,while the characteristics of spatial distribution and output are decided by partial structure.In the end,we come up with prospecting and exploration potential of the same type of gold mine in this area.