玄武岩中刚玉巨晶的包体研究:Ⅰ.更长石包体的发现及意义  

INCLUSIONS IN CORUNDUM MEGACRYST FROM ALKALI BASALT,Ⅰ.THE DISCOVERY OF OLIGOCLASE INCLUSIONS AND ITS SIGNIFICANCE

作　　者：丁振华[1] 

机构地区：[1]中国科学院地球化学研究所,贵阳550002

出　　处：《矿物学报》1998年第1期23-27,共5页Acta Mineralogica Sinica

摘　　要：本文对山东昌乐碱性玄武岩中刚玉巨晶的更长石包体及同一地区产出的歪长石巨晶进行了电子探针、红外吸收光谱测定，讨论了更长石包体与刚玉巨晶、歪长石巨晶间的成因关系，认为刚玉巨品、歪长石巨晶以及玄武岩中的其他巨晶构成了一个结晶序列，歪长石相对较晚结晶。Oligoclase inclusions in corundum and anorthoclase megacrysts from an alkali basaltwere determined with electron probe and IR. This paper discusses the genetic relations betweenoligoclase inclusions, and corundum and anorthoclase megacrysts, and suggests that the corundumand anorthoclase megacrysts and otber kinds of megacrysts from the alkali basalt constitute a crys-tallization series with a anorthoclase megacrysts crystallized relatively late.

关 键 词：刚玉 丕长石 更长石 巨晶 包体 玄武岩 

分 类 号：P588.145[天文地球—岩石学]