|
|
 |
|||||||||||||||||
|
|||||||||||||||||
 |
|||||||||||||||||
| JOURNAL HOME | HELP | CONTACT PUBLISHER | SUBSCRIBE | ARCHIVE | SEARCH | TABLE OF CONTENTS |
Geological Institute, Russian Academy of Sciences, 7 Pyzhevsky Street, 109017 Moscow, Russia
* E-mail: dritsva{at}geo.tv-sign.ru
(Received 10 April 2003; revised 31 August 2003)
Different forms of structural and chemical heterogeneity are considered including mixed-layer minerals, disordered layer structures containing rotational and translational stacking faults, interstratification of trans-vacant (tv) and cis-vacant (cv) layers in true micas, illites and illite-smectite (I-S), short-range order in isomorphous cation distribution etc.
Because determination of various structural and chemical imperfections requires elaboration of new diffraction and spectroscopic methodologies, special attention is paid to recent achievements in the development of new methodological approaches such as a multispecimen simulation of experimental X-ray diffraction (XRD) patterns from mixed-layer minerals, with account taken of layer-thickness fluctuations of the second type and possible difference between structures of outer and core layers; experimental determination of thickness distribution of illite crystals by HRTEM and the modified Bertaut-Warren-Averbach technique; XRD and thermal methods for determination of cv and tv layers in true micas, illites and I-S; generalization of Méring’s rules to account for the behaviour of non-basal reflections for any defective structure in which two translations are irregularly interstratified; various ab initio calculations devoted to modelling infrared OH vibrations, octahedral cation distribution in dioctahedral 2:1 layer silicates, etc. It is shown that these recently-developed methodologies have revealed new diversity in the structural and chemical heterogeneity of phyllosilicates and clay minerals, provided new insight into the structural mechanisms of their transformation in different geological environments, and discovered new natural processes.
KEYWORDS: heterogeneity, layer silicates, clay minerals, mixed layers, illite, illite-smectite, mica
This article has been cited by other articles:
|
|
 |
|
  D. K. McCarty, B. A. Sakharov, and V. A. Drits EARLY CLAY DIAGENESIS IN GULF COAST SEDIMENTS: NEW INSIGHTS FROM XRD PROFILE MODELING Clays and Clay Minerals, June 1, 2008; 56(3): 359 - 379. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Lantenois, F. Muller, J.-M. Beny, J. Mahiaoui, and R. Champallier HYDROTHERMAL SYNTHESIS OF BEIDELLITES: CHARACTERIZATION AND STUDY OF THE CIS- AND TRANS-VACANT CHARACTER Clays and Clay Minerals, February 1, 2008; 56(1): 39 - 48. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. B. Zviagina, B. A. Sakharov, and V. A. Drits X-RAY DIFFRACTION CRITERIA FOR THE IDENTIFICATION OF TRANS- AND CIS-VACANT VARIETIES OF DIOCTAHEDRAL MICAS Clays and Clay Minerals, October 1, 2007; 55(5): 467 - 480. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 T. Kogure Imaging of dioctahedral 2:1 layers by high-resolution transmission electron microscopy (HRTEM): Possibility of recording the dehydroxylate American Mineralogist, August 1, 2007; 92(8-9): 1368 - 1373. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. Kogure, J. Kameda, and V. A. Drits Novel 2:1 structure of phyllosilicates formed by annealing Fe3+, Mg-rich dioctahedral mica American Mineralogist, August 1, 2007; 92(8-9): 1531 - 1534. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. Tunega, B. A. Goodman, G. Haberhauer, T. G. Reichenauer, M. H. Gerzabek, and H. Lischka AB INITIO CALCULATIONS OF RELATIVE STABILITIES OF DIFFERENT STRUCTURAL ARRANGEMENTS IN DIOCTAHEDRAL PHYLLOSILICATES Clays and Clay Minerals, April 1, 2007; 55(2): 220 - 232. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
V. A. Drits and D. K. McCarty THE NATURE OF STRUCTURE-BONDED H2O IN ILLITE AND LEUCOPHYLLITE FROM DEHYDRATION AND DEHYDROXYLATION EXPERIMENTS Clays and Clay Minerals, February 1, 2007; 55(1): 45 - 58. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S. HILLIER, M. J. WILSON, and R. J. MERRIMAN Clay mineralogy of the Old Red Sandstone and Devonian sedimentary rocks of Wales, Scotland and England Clay Minerals, March 1, 2006; 41(1): 433 - 471. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. I. Sainz-Diaz, E. Escamilla-Roa, and A. Hernandez-Laguna Quantum mechanical calculations of trans-vacant and cis-vacant polymorphism in dioctahedral 2:1 phyllosilicates American Mineralogist, November 1, 2005; 90(11-12): 1827 - 1834. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
V. A. Drits, B. A. Sakharov, A. L. Salyn, and H. Lindgreen Determination of the content and distribution of fixed ammonium in illite-smectite using a modified X-ray diffraction technique: Application to oil source rocks of western Greenland American Mineralogist, January 1, 2005; 90(1): 71 - 84. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
V. A. DRITS, H. LINDGREEN, B. A. SAKHAROV, H. J. JAKOBSEN, and B. B. ZVIAGINA The detailed structure and origin of clay minerals at the Cretaceous/Tertiary boundary, Stevns Klint (Denmark) Clay Minerals, December 1, 2004; 39(4): 367 - 390. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. K. McCarty, D. K. McCarty, V. A. Drits, B. Sakharov, B. B. Zviagina, A. Ruffell, and G. Wach HETEROGENEOUS MIXED-LAYER CLAYS FROM THE CRETACEOUS GREENSAND, ISLE OF WIGHT, SOUTHERN ENGLAND Clays and Clay Minerals, October 1, 2004; 52(5): 552 - 575. [Abstract] [Full Text] [PDF]
|
|
| JOURNAL HOME | HELP | CONTACT PUBLISHER | SUBSCRIBE | ARCHIVE | SEARCH | TABLE OF CONTENTS |
