云南西双版纳埃洛石特征研究  

Characteristics of Halloysite from Xishuangbanna Area, Yunnan Province, China

作　　者：李小帆[1] 管俊芳[1,2] 程飞飞[1] 张帆[1] 殷科[3] 

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]矿物资源加工与环境湖北省重点实验室,湖北武汉430070 [3]中国地质大学地球科学学院,湖北武汉430074

出　　处：《矿物学报》2016年第1期138-142,共5页Acta Mineralogica Sinica

基　　金：国家青年基金项目(49602022);博士后科学基金(2014M562084)

摘　　要：采用X射线衍射（XRD）、扫描电子显微镜（SEM）、傅里叶红外吸收光谱（FT-IR）、X荧光光谱分析（XRF）、电子探针,等现代测试手段,对西双版纳-2μm粒级埃洛石的矿物学特征进行了系统的研究。研究结果表明：该矿床中同时存在10A-埃洛石和7A-埃洛石,以10A-埃洛石为主。埃洛石管的平均长度为约1.25μm,平均外径约0.16μm,内径为15-40 nm,管状结构形态较好,具有天然纳米多孔晶体材料性质。加热后10A-埃洛石中结构水较容易脱除,导致10A-埃洛石转变为7A-埃洛石,但7A-埃洛石的结构水较难脱除,在400℃仍有残留。Xishuangbanna halloysite（-2 microns） was characterized by a series of modern test methods, such as X-ray diffraction（XRD）, scanning electron microscopy（SEM）, Fourier infrared absorption spectrum（FT-IR） electron probe and X-ray fluorescence spectrometry（XRF）. Results show that the Halloysite deposit gives priority to with 10A-halloysite, and contains some 7A-halloysite as well. The average length of Halloysite tube is 1.25 microns, the average diameter（od） is 0.16 microns, with diameter（inner） of 15―40 nm. The shape is good, with a natural nano porous crystal material properties. Together with the method of heating, we studied the water in halloysite, and studied the structure of halloysite indirectly. Results show that the 10A-halloysite turn into 7A-halloysite easily. With heating, little water still remians in 7A-halloysite, especially the temperature reach 400 ℃.

关 键 词：埃洛石 特征 应用 

分 类 号：P578.965[天文地球—矿物学] P579[天文地球—地质学]