天然磁铁矿中方铁矿的调制结构及畴结构  

THE LATTICE MODULATION AND DOMAINS OF WUSTITE IN NATURAL MAGNETITE

作　　者：王岩国[1] 郭九皋[2] 

机构地区：[1]中国科学院金属研究所固体原子象实验室,沈阳110015 [2]中国科学院地质新技术研究所,广州510640

出　　处：《矿物学报》1994年第2期147-151,T003,共6页Acta Mineralogica Sinica

摘　　要：用高分辨电子显微术研究了攀枝花磁铁矿的超微结构。选区电子衍射显示有方铁矿共生，并且方铁矿中有调制结构，周期约为方铁矿晶胞的2．6倍，具有一维非公度特征。[001]取向的结构象也清楚地显示该调制结构。磁铁矿还含有丰富的畴结构，畴界面分基面和非基面两类，有方铁矿与畴结构共生。对这些微结构的成因进行了讨论。The ultrafine structures of magnetite collected from the Panzhihua district, China have been investigated by high resolution electron microscopy (HREM). The selected-area electron diffraction pattern of magnetite showed the intergrowth of wustite with magnetite and the lattice modulation of wustite which is characterized by one dimension incommensurate structure as similar as P'phase and a modulation period of about 2. 6 times the cell of wustite. The (001) structure image revealed also the lattice modulation of wustite. There are a lot of domain structures in magnetite and they may be divided into basal and nonbasal domains in which the coexistence of wustite is sometimes found. The origin of these microstructures is preliminarily discussed.

关 键 词：磁铁矿 方铁矿 调制结构 畴结构 

分 类 号：P578.46[天文地球—矿物学]