摘要
作者利用透射电镜技术,对河北承德黑山绿泥石化阳起石中的绿泥石小晶体进行了研究。除一般的±b/3堆垛无序的绿泥石外,还发现了局部区域中12层重复的绿泥石多型。导致此种结构的原因是绿泥石的结构单元层之间不仅发生±b/3的位移,同时还发生±a/3位移的规则堆垛。它应是阳起石蚀变过程中的中间产物。
The 12-layer polytype of chlorite as well as the ±b/3 stacking disordered chlorite was found in the chloritized actinolite from Blackhill, Chengde by means of TEM. The ±a/3 displaces together with ±b/3 displaces between the adjacent stacking layers are responsible for the formation of this chlorite polytype. Also, this polytype is an intermediate product of actinolite alteration, and it would be finally transformed into the 1-layer polytype of chlorite.
出处
《矿物学报》
CAS
CSCD
北大核心
1990年第3期204-207,T001,共5页
Acta Mineralogica Sinica
基金
国家自然科学基金
南京大学固体微结构物理实验室资助的课题
