Electron microscopy study of the sakhaite from endogenous borate deposit in Hunan, China

Sakhaite specimens from an endogenous borate deposit in Hunan Province, China have been studied in detail by means of transmission electron microscopy (TEM). The selected area electron diffraction (SAED) patterns obtained with different crystal zone axes show that the crystal system is cubic, with a = 1.463 nm. The convergent beam electron diffraction (CBED) patterns indicate that the point group and space group of sakhaite is m3m and Fd3m, respectively. The space group of synthetic sakhaite determined by Chichagov (1974) is F4132. The possible reasons why the space groups of the natural and the synthetic sakhaites are different are discussed.

作 者：

Liu Xiangwen YANG Guangming ZOU Huamin QU Jing Zhao Wenxia  

作者单位：

Liu Xiangwen(Graduate School, China University of Geosciences, Wuhan,430074, China;Test Center, China University of Geosciences, Wuhan,430074, China)
YANG Guangming(Test Center, China University of Geosciences, Wuhan,430074, China)
ZOU Huamin(Physics and Technology College, Wuhan University, Wuhan,430072, China)
QU Jing(Graduate School, China University of Geosciences, Wuhan,430074, China)
Zhao Wenxia(Test Center, Zhongshan University, Guangzhou,510275, China) 

刊 名：

中国科学D辑(英文版)  SCI

英文刊名：

SCIENCE IN CHINA(SERIES D) 

年，卷(期)：

2004 47(3) 

分类号：

P5 

关键词：

sakhaite   space group   convergent beam electron diffraction (CBED)  

机标分类号：

O64 TB3 

机标关键词：

electron diffractionspace groupelectron microscopyHunan Provinceborate depositpoint group 

基金项目：

国家自然科学基金 

DOI：

10.1360/02YD0263