Solid-state nuclear magnetic resonance and infrared spectroscopy of alkali feldspars  

作　　者：周玲棣 郭九皋 杨年华 李丽云 

机构地区：[1]Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China [2]Laboratory of Magnetic Resonance and Atom and Molecular Physics, Wuhan Institute of Physics, Chinese Academy of Sciences, Wuhan 430071, China

出　　处：《Science China Earth Sciences》1997年第2期159-165,共7页中国科学（地球科学英文版）

基　　金：Project supported by the Foundation of Magnetic Resonance and Atom and Molecular Physics,Wuhan Institute of Phyiscs,Chinese Academy of Sciences

摘　　要：^(29)Si, ^(27)Al MAS NMR and IR spectra of monophase K-feldspars (sanidine, orthoclase and micro-cline) and Na-feldspars (monalbite, anorthoclase and low albite) in different structural states have been studied. The NMR and IR spectra of K-feldspars and Na-feldspars vary regularly along with their degrees of Si/Al ordering evolution. Si in orthoclase occupies T2m, T2o and T1m, and the high-temperature Na-feldspar (monalbite and anorthoclase) coincides in 29Si, 27Al NMR and IR spectra. Moreover, all the high-temperature Na-feldspars and sanidine have the same 27Al NMR and IR spectra.²⁹Si, ²⁷Al MAS NMR and IR spectra of monophase K-feldspars （sanidine, orthoclase and micro-cline） and Na-feldspars （monalbite, anorthoclase and low albite） in different structural states have been studied. The NMR and IR spectra of K-feldspars and Na-feldspars vary regularly along with their degrees of Si/Al ordering evolution. Si in orthoclase occupies T2m, T2o and T1m, and the high-temperature Na-feldspar （monalbite and anorthoclase） coincides in 29Si, 27Al NMR and IR spectra. Moreover, all the high-temperature Na-feldspars and sanidine have the same 27Al NMR and IR spectra.

关 键 词：K-FELDSPAR Na-feldspar NMR IR ORDERING 

分 类 号：P578[天文地球—矿物学]