青海驼路沟钴矿成矿特征及控矿规律研究  

Study on metallogenic features and ore-controlling regularity of Tuolugou cobalt deposit in Qinghai Province

作　　者：赵俊伟[1] 孙丰月[1] 李世金[1] 石天成[2] 胡继春[2] 顾瑛[2] 

机构地区：[1]吉林大学地球科学学院,长春130061 [2]青海省地质调查院,西宁810012

出　　处：《世界地质》2008年第1期7-13,29,共8页World Geology

基　　金：国土资源大调查"东昆仑成矿带重大找矿疑难问题研究"(200310200012)

摘　　要：驼路沟钴矿床位于东昆仑造山带昆南复合拼贴带内,是国内少数独立钴矿床之一。赋存地层为奥陶—志留纪纳赤台群哈拉巴依沟组,矿体呈似层状、透镜状产出,矿体产状与围岩一致,层位、构造控矿特征显著,变形变质强烈,沿走向和倾向均有斜列和波状弯曲、膨大、缩小现象。矿床热液叠加成矿显著,表现出"似层非层、似脉非脉"的特点,成矿后改造使矿段间差异性抬升和矿体侧伏明显,矿床成因为热水沉积-热液叠加改造型。Tuolugou cobalt deposit, one of a few independent cobalt deposits in China, is located in southern compound margin of Eastern Kunlun orogen. The stratum is from Helabayigou Formation of Nachitai Group during Ordovician-Silurian. The ore bodies occur as layers and also as lenticles, their occurrence is consistent with wall rocks, with well marked characters of layer and ore control. They underwent intensively metamorphism and deformation, giving rise to diagonal, undulant curving, swelling and shrinking occurrences both along the striking and dipping directions. It is a significant hydrothermal superimposed deposit, with the characteristics of ＂stratiform but not bed, vein-like but not vein＂, post-mineralization activities result in diverse uplifting and obviously lateral trending of ore bodies, and it is affirmed to be a hydrothermal superimposition deposit.

关 键 词：成矿特征 热水沉积-热液叠加改造 控矿规律 驼路沟 青海 

分 类 号：P612[天文地球—矿床学]