沉积岩中粘土矿物提纯方法

粘土矿物广泛分布于各种沉积岩中。由于粘土矿物颗粒细小、常与长石、石英、有机质等混杂在一起,要详细研究粘土矿物,必须首先进行粘土提纯。粘土提纯的方法有:超速离心机法、静水沉降法、电泳法等。通过我们近二十年来的工作实践,建立了较完善的静水沉降粘土提纯法。本文除着重介绍了这种方法外,并对电泳法也作简单介绍。

THE METHOD FOR PURIFYING CLAY MINERALS OF SEDIMENTARY ROCKS

This paper deals with an effective procedure for purifying clay minerals of sedimentary rocks by static water precipitation,which is well sufficient for requirements of analysis and determination of mineral composition,diagenetic change and distribu-tion characteristics.Comparing with the other methods,it seems to be more simple,economic and reliable.Despite these advantages it still remains to be further improved due to its complicated procedure.In this paper the electrophoretic method is also introduced briefly,which is a prospecting method for further separating clay minerals with various composition.