盘县陇英大地金矿土壤地球化学异常浅析  

Analyses on the Geochemical Abnormality of Dadi Gold Mine in Longying,Panxin

作　　者：龙秀洪 何彦南 

机构地区：[1]贵州地质矿产局105地质大队,贵州贵阳550018

出　　处：《贵州地质》2009年第1期52-54,共3页Guizhou Geology

摘　　要：陇英大地金矿位于大黑山背斜北翼,金矿产于F2断层两盘的层间破碎带、软弱带及节理、裂隙中,呈脉状、树枝状。容矿岩石主要为凝灰岩、破碎蚀变的拉斑玄武岩、沉凝灰岩。Au、As、Hg、Sb浓集于F2断层破碎带及其两盘节理裂隙发育地带,异常套合较好,与金矿化带相吻合,是化探找金良好的指示元素。Au、As、Hg、Sb具分带规律:As(前缘晕)-Hg(中晕)-Sb(中晕)-Au(尾晕)。As、Hg、Sb异常的面积、浓集带(Ⅲ级异常)面积、强度、规模远不及Au异常,表明矿体剥蚀严重。因此,认为本区及地质构造环境相似的地区,以Au、As、Hg、Sb为指示元素,根据异常组合特征、分带规律等,进行化探找金,具有重要的指导意义。Dadi gold mine situated in the north Daheishan anticline, the gold mine was found in interstratified fracture zone, weak zone, joint and cranny of fault F2, the appearances are nervation and arborizition. The ore - hosting rocks mainly are tuff, cracked and alternated tholeiite and sedimentary tuff. Au, As, Hg, Sb concentrated in the fault - cracked belt and cranny developed zone of the joints, the abnormality overlap was fine and dovetailed with the gold ore belt, are the good indicator elements for chemical prospecting. Au, As, Hg, Sb has distribution regulation： As （front halo）, Hg （middle halo）, Sb （middle halo）, Sb （back halo）. The area of abnormality and concentration zone（abnormality lid, intensity, scale of As, Hg, Sb are less than Au in abnormality, it showed that the denudation of orebody is terrible. Therefore, it＇ s thought that for this area and the similar areas, take Au, As, Hg, Sb as the indicator elements, according to the characters of abnormality association and distribution regulation, it will be important guide significance for gold exploration by chemical prospecting.

关 键 词：指示元素 综合异常 异常套合 分带规律 化探找金 

分 类 号：P618.51[天文地球—矿床学] P632.1[天文地球—地质学]