安徽张八岭构造带小庙山金矿容矿断裂构造地球化学研究  

STUDY ON THE TECTONIC GEOCHEMISTRY O F ORE-CONTAINING FAULT FROM THE XIAOMIAOS HAN GOLD DEPOSIT IN THE ZHANGBALING TECTONIC BELT

作　　者：黄德志[1] 戴塔根[1] 孔华[1] 邱瑞龙[2] 徐祥[2] 

机构地区：[1]中南大学资源环境学院,湖南长沙410083 [2]安徽省地质调查院,安徽合肥230001

出　　处：《大地构造与成矿学》2002年第1期69-74,共6页Geotectonica et Metallogenia

摘　　要：张八岭构造带金矿包括蚀变构造岩型和石英脉型两类。两种类型金矿均完全受断裂控制。张八岭构造带内小庙山金矿断裂构造地球化学研究表明,蚀变构造岩型金矿容矿断裂构造分带良好,成矿元素组合为Fe、Cu、Pb、Zn、Au、Ag、Mn、Th、V等,为带入组份。相斥组份有Na2O、CaO、SiO2、Ba和Sr,以及K,构造强度与SiO2、K2O、Na2O、CaO呈明显负相关。为蚀变反应的生成物组份,从构造带中迁出,其中K部分为斜长石蚀变矿物绢云母接纳。构造活动越强,成矿元素越富,相斥元素迁出量越多。反映了构造活动—蚀变作用—成矿作用三位一体的特征。石英脉型金矿容矿断裂缺乏构造分带,成矿元素组合为K、As、Rb、Au等,无明显组份带出。两种类型金矿断裂构造地球化学的差异是它们成矿机理不同的结果,蚀变构造岩型金矿成矿作用与蚀变反应有关,成矿流体化学环境的变化是导致Au的沉淀主要因素;石英脉型金矿Au的沉淀主要原因是成矿流体物理环境的显著改变。There are two type of gold deposits,a ltered tectonite type and quartze-v ein type,in the Zhang-baling tectonic belt.The container fracture of the altered tectonite ty pe gold deposits shows structure zon ing well.The assemblage of metallogeni c elements of this type gold deposits consists of <FeO>,elements Cu,Pb,Zn,Au,Ag,Mn,Th,V,et al.The exc lusional components,K 2O,Na 2 O,CaO,SiO2 ,Ba and Sr,which are products of alteration rea ction,are negative correlation with the rock's deformation level.It shows altered tectonite gold deposits hav e the character of concoindence amon g structure,alteration and metallo-geneisis.The stronger the rock defo rms,the higher the metallogenic ele ments concentration and the lower th e exclusional elements concentratio n are in it.The container fracture of quartze-vein type gold deposits is deficient in structure zoning.The m etallogenic compenents are K 2O,Au,As,Rb,which are migrated into the container fracture.

关 键 词：安徽 构造地球化学 金矿床 容矿断裂 张八岭构造带 成矿作用 

分 类 号：P618.51[天文地球—矿床学] P595[天文地球—地质学]