川北—甘南地区类卡林型金矿床的地质-地球化学特征  

GEOLOGICAL AND GEOCHEMICAL SIGNATURE OF CARLIN-LIKE GOLD DEPOSITS IN THE NORTH SICHUAN-SOUTH GANSU AREA

作　　者：孙树浩 

机构地区：[1]中钢集团天津地质研究院,天津300061

出　　处：《地质找矿论丛》2005年第1期8-14,共7页Contributions to Geology and Mineral Resources Research

基　　金：原国家黄金管理局地质科研项目(I 88 92 02 2 2)资助。

摘　　要：川北的联合村金矿和甘南的阳山金矿均为类卡林型金矿床。金矿形成于松潘—甘孜褶皱带与秦岭(华北)被动陆缘沉积构造活动带的对接部位。矿石类型不仅有各类沉积岩型,并有同等比例的蚀变脉岩型。金矿物粒径小于 0.1μm。单体金占总含金量的 91.6%,为易选金矿石。金矿床具有Au,Ag,As,Sb,Hg,Cu,Pb,Zn,Tl,Se,Te,Mo,Ba低温元素组合及丰度。除金矿床的容矿岩石与卡林金矿有所区别外,区内金矿床的地质 地球化学特征与美国卡林型金矿床相似。Lianhecun Au deposit in the North Sichuan and Yangshan Au deposit in the south Gansu are all Carlin-like Au deposits formed in the amalgamation zone between the Songpan-Ganzi fold belt and sedimentary-structural mobile zone of the passive Qinling (the North China ) continent margin. They include not only the sedimentary rock-hosted gold ore but also the altered vein-type gold ore. Grain size of gold minerals are generally less than 0.1 μm. Free gold is about 91.6%of the total gold and the ore is easily to process. Gold deposits in the North Sichuan and south Gansu area are similar to Carlin gold deposit in the aspects of hydrothermal alteration, epithermal element association of Au, Ag, As, Sb, Hg, Cu, Pb, Zn, Tl, Se, Mo, and Ba but the hostrock is different from Carlin. They are of orogenic epithermal gold deposits.

关 键 词：类卡林型金矿 秦岭(华北)被动陆缘 微量元素 稳定同位素 

分 类 号：P611[天文地球—矿床学] P618.51[天文地球—地质学]