绿泥间蜡石微结构的高分辨电镜观察

本文提供高分辨电镜(HRTEM)所得的绿泥问蜡石的001]、110]和100]晶格像。根据大量观察,业已证实绿泥间蜡石c~*方向Co-Py的规则堆垛及绿泥间蜡石晶畴的稳定性,也揭示了绿泥间蜡石雏晶内、外存在的许多有意思的微结构现象。这些现象有锂绿泥石微分凝晶畴;a,b方向的无序;畴间的协调,不协调堆垛和楔形晶层的插入;晶层的弯曲和侧相变;绿泥间蜡石畴内层堆垛的有序/无序。所有上述现象已予解释,并认为这是造或间层矿物一维有序的根本原因。最后,提出不同于基本微粒说的观点,并以自组织理论讨沦了该晶体的生长机理。

HRTEM OBSERVATION OF FINE STRUCTURE OF LUNIJIANLAITE

Presented in this paper are the 01], 110], 100] lattice images of lunijianlaite observed under HRTEM. According to a great number of observations, regular alternative Co-Py stacking along c~* and the stability of lunijianlaite domain have been confirmed, and many interesting phenomena pertaining to microstructures existing within or outside lunijianlaite crystallites have been revealed too. These phenomena include microsegregation Codomain, disordering along the a and b directions, concordant/disconcordant stacking and interpolation of sphenoid lunijianlaite layers between the domains, curving and lateral phase change of the layer, stacking fault and ordered/disordered layer stacking within the lunijianlaite domain. All the above phenomena have been interpreted and are considered a fundamental cause for a change from interstratified mineral into one-dimentional ordered c(?)ystal. Finally, our viewpoints, which are different from the fundamental particle theory, are presented and the mechanism of crystal growth is discussed in terms of self-organization theory.