碱性玄武岩中长石巨晶的结构水:红外光谱和核磁共振谱研究  

Structural water in anorthoclase megacrysts from alkalic basalts: FTIR and NMR study.

作　　者：夏群科[1] 潘尤杰 陈道公[1] Kohn Simon 支霞臣[1] 郭立鹤[4] 程昊[1] 吴元保[1] 

机构地区：[1]中国科技大学地球和空间科学系,合肥230026 [2]合肥市城市排水监测站,合肥230061 [3]Department of Geology,Bristol University [4]中国地质科学院矿床地质所,北京100037

出　　处：《岩石学报》2000年第4期485-491,共7页Acta Petrologica Sinica

基　　金：国家自然科学基金 (4980 3 0 0 2 )资助项目

摘　　要：运用傅立叶变换红外光谱技术 (FTIR,红外区和近红外区 )和质子魔角旋转核磁共振技术 (1 H MAS NMR)对来自安徽女山、江苏盘石山和河北汉诺坝新生代碱性玄武岩中的 4个歪长石巨晶进行了观察 ,结果显示 ,这些巨晶含有结构水 ,主要以 H2 O的形式存在 ,其中 3个样品的结构水含量 (H2 O)分别为 40 5μg/ g,915μg/ g和 36 5μg/ g。这些数据和文献中已有的资料表明 。Four anorthoclase megacrysts from Cenozoic alkalic basalts from Nushan, Anhui province, Panshishan, Jiangsu province and Hannuoba, Hebei province have been investigated by FTIR and 1H MAS NMR. The spectra show that these samples contain structural hydrogen which occur as H 2O. The water contents of three megacrysts are 405μg/g, 915μg/g和365μg/g respectively?Combining these values with previously reported data, it seems that nominally anhydrous feldspards could be a part of water reservoir of the earth.

关 键 词：红外光谱 核磁共振谱 长石巨晶 玄武岩 结构水 

分 类 号：P588.145[天文地球—岩石学] P575.4[天文地球—地质学]