金厂沟梁—二道沟金矿田地质地球化学特征及成因探讨  

Discussin on genesis and geological-geochemical feature of Jinchanggouliang-Erdaogou gold minerogenetic field

作　　者：刘宗秀[1] 魏存弟[1] 赵春光 翟玉峰 武玉琪 

机构地区：[1]吉林大学地球科学学院,吉林长春130061 [2]内蒙赤峰市金厂沟梁金矿,内蒙赤峰024000

出　　处：《世界地质》2002年第1期13-17,共5页World Geology

摘　　要：金厂沟梁 -二道沟金矿田的大地构造位置为内蒙地轴上的努鲁儿虎隆起区 ,其金矿脉多属石英-硫化物复合脉型 ,矿脉的产状受NW向区域断裂及对面沟岩体侵入形成的主动式断裂构造控制。主要矿物有石英、黄铁矿、黄铜矿等 ,载金矿物主要为黄铁矿、石英 ;矿床的矿化和蚀变具多阶段叠加性。其氢氧同位素特征表明 ,岩体、围岩、矿体三者具有密切关系 ,矿石的氢氧同位素特征表明金矿热液来源于岩浆 ,并有雨水加入 ,硫同位素值接近陨石硫值 ,具单峰塔式效应 ,矿体铅与岩体铅具有一致性 ,岩体与矿体稀土曲线具相似性。从而认为金厂沟梁The architectonic place of the Jinchanggouliang-Erdaogou gold field is Nuluerhu-upwarped district in Inner Mongolia earth's axis.The type of it's gold ore vein is quartz-sulfide composite vein type. The occurrences of gold ore vein are controlled by regional rift of NW and active rift that forms when Duimiangou rock body injects. There are some minerals: quartz,pyrite,chalcopyrite and so on . Pyrite and quartz are main Au-carried minerals. The mineralization and alteration have overlapping and multi-period auribute. Its features of HO isotope show that rock body, wall rock and ore body have close relation. The features of ore isotopes show that hydrotephroites come from magma and rain. Sulphur isotopes close to sulphur of ceraunite , leads of ore and rock are accordant. The chart of rareearth of rock body and ore body are similar. So the authors point out that the genesis of Jinchanggouliang-Erdaogou gold minerogenetic field is hydrothermal deposit which is derived from remelting lower crust rocks.

关 键 词：地球化学 成因 金矿田 断裂构造 围岩 载金矿物 

分 类 号：P618.51[天文地球—矿床学]