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Study of the Stacking Sequences of an Irregular Mixed—Layer Illite / Smectite (I / S) Clay Mineral1

Study of the Stacking Sequences of an Irregular Mixed—Layer Illite / Smectite (I / S) Clay Mineral1 Abstract There are two aspects in the study of irregular mixed—layer clay minerals: one is the kinds and ratios of their basic structural unit layers and the other is the junction probabilities of the unit layers. Irregular mixed—layer illite / smectite clay minerals (I / S) are widespread in nature. While studying the clay minerals from the Permian—Triassic (P / T) boundary bed, the authors found that I / S clay minerals are developed in all P / T boundary clay layers in areas from the northwest to southeast of China. Systematic mineralogical studies of the I / S clay minerals from Hunan, Hubei, Sichuan and Zhejiang were made by means of X—ray, infrared spectroscopic, electron microscopic and chemical analyses and a deepened study of the stacking sequences of their structural unit layers was conducted by the MacEwan one—dimentional direct Fourier transform. It was found that the stacking of the illite and smectite crystal layers along the c axis can be derived from Fibonacci sequences. Hence, the authors propose that such I / S clay minerals are possessed of two—dimentional crystal lattice and one—dimentional quasicrystal lattice. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Geologica Sinica (English Edition) Wiley

Study of the Stacking Sequences of an Irregular Mixed—Layer Illite / Smectite (I / S) Clay Mineral1

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References (2)

Publisher
Wiley
Copyright
Copyright © 1993 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1000-9515
eISSN
1755-6724
DOI
10.1111/j.1755-6724.1993.mp6004003.x
Publisher site
See Article on Publisher Site

Abstract

Abstract There are two aspects in the study of irregular mixed—layer clay minerals: one is the kinds and ratios of their basic structural unit layers and the other is the junction probabilities of the unit layers. Irregular mixed—layer illite / smectite clay minerals (I / S) are widespread in nature. While studying the clay minerals from the Permian—Triassic (P / T) boundary bed, the authors found that I / S clay minerals are developed in all P / T boundary clay layers in areas from the northwest to southeast of China. Systematic mineralogical studies of the I / S clay minerals from Hunan, Hubei, Sichuan and Zhejiang were made by means of X—ray, infrared spectroscopic, electron microscopic and chemical analyses and a deepened study of the stacking sequences of their structural unit layers was conducted by the MacEwan one—dimentional direct Fourier transform. It was found that the stacking of the illite and smectite crystal layers along the c axis can be derived from Fibonacci sequences. Hence, the authors propose that such I / S clay minerals are possessed of two—dimentional crystal lattice and one—dimentional quasicrystal lattice.

Journal

Acta Geologica Sinica (English Edition) – Wiley

Published: Dec 1, 1993

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