%0 Journal Article
%T Two different illites in Luochuan loess, Northern Shaanxi Province
%A Li Chen
%A Lifei Zhang
%A Hejin Wang
%A Liping Zhou
%A Jing Chen
%A Baoyin Yuan
%A <br>CHENLi
%A ZHANGLifei
%A WANGHejin
%A ZHOULiping
%A CHENJing
%A YUANBaoyin
%J 科学通报(英文版)
%D 2005
%I 
%X Two different illites in samples from S0 to L10 loess-paleosol sequence at Heimugou section in Luochuan are identified by decomposition of X-ray diffraction (XRD) curve, transmission electronic microscopy (TEM) and energy dispersive X-ray detector (EDX) analyses. Type I illite displays relatively poor crystallinity, wide and blunt XRD peaks, the highest content of which in < 2 μm clay minerals is up to 55%. Type II illite shows good crystallinity, narrow and sharp XRD peaks. The contents of these two types of illites show mutually exclusive relationship in the studied section. The EDX analyses indicate that in contrast to the illite with good crystallinity, the illite with poor crystallinity is enriched in K+, Si4+ and depleted in Al3+.
%K loess
%K illite
%K decomposition of XRD
%K TEM<br>伊利石
%K 黄土
%K 陕西
%K 能量分散X射线探测
%K X射线衍射分析
%K 转换电子显微镜
%K 粘土矿物
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=BE52702AC3CB182B5967DB2EADF9B615&yid=2DD7160C83D0ACED&vid=771152D1ADC1C0EB&iid=CA4FD0336C81A37A&sid=0D0D661F0B316AD5&eid=117F81797AB182FC&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=3&reference_num=23