内蒙古温都尔庙蛇绿岩带岩石学及矿物学特征  

Petrological and Mineralogical Characteristics of the Wenduermiao Ophiolite,Inner Mongolia,China

作　　者：傅振洋 杜显峰[1,2] 张明峰[3] 胡国泽[1] 王先彬[3] 卓胜广[1] 

机构地区：[1]东北大学秦皇岛分校资源与材料学院,河北秦皇岛066004 [2]中国地质大学(北京),北京100083 [3]甘肃省油气资源研究重点实验室中国科学院油气资源研究重点实验室,兰州730000

出　　处：《矿物岩石地球化学通报》2016年第2期264-271,共8页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家自然科学基金资助项目(41272146;41103022;41172133)

摘　　要：为探讨内蒙古温都尔庙蛇绿岩的岩石学特征、矿物学特征及其成矿意义,通过镜下岩矿鉴定、XRD分析以及扫描电镜等方法对其进行了研究。结果显示,研究区原岩可分为4类:变质橄榄岩、镁铁质-超镁铁质堆晶杂岩单元、火山熔岩单元和上覆岩系的硅质岩;岩石遭受了强烈低温热液蚀变或自变质热液蚀变;橄榄石、辉石、角闪石、斜长石等为主要的造岩矿物,次生矿物为低温热液蚀变矿物;叶蛇纹石、利蛇纹石、纤蛇纹石3种蛇纹石在变质橄榄岩中普遍存在,是橄榄石和辉石的蚀变产物。In order to discuss petrological and mineralogical characteristics and the metallogenic significance of the Wen- duermiao ophiolite, which is located in the orogenic belt between Sino-Korean plate and Siberian plate, the ophiolite has been studied in this paper by using microscope, XRD, and SEM.They include metaperidotite unit, marie-uhramafic marie cumulative rockunit, volcanic lava unit, and overlying siliceous rock unit. Rocks were intensively altered by epithermal or auto-metamorphic hydrothermal fluids. They contain major ore-forming minerals of olivine, pyroxene, hornblende, and plagioclase, and secondary minerals by epithermal alteration. Three types of serpentine including antigorite, lizardite, and chrysotile are commonly existed in the altered peridotite, as they are alteration products of olivine and pyroxene.

关 键 词：蛇绿岩 岩石学 矿物学 温都尔庙 

分 类 号：P588[天文地球—岩石学]