Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-22T23:29:28.358Z Has data issue: false hasContentIssue false
  • English
  • Français

Polytypism of Micas. III. X-Ray Diffraction Identification

Published online by Cambridge University Press:  02 April 2024

Z. Weiss  and
A. Wiewióra
Z. Weiss
Affiliation:
Coal Research Institute, 71607 Ostrava-Radvanice, Czechoslovakia
A. Wiewióra
Affiliation:
Institute of Geological Sciences, Polish Academy of Sciences, 02089 Warszawa, Poland
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Classification and identification criteria of maximum-degree-of-order (MDO) polytypes of homo- and meso-octahedral micas based on the distribution of the intensities of 20l (13l) and 02l reflections are proposed. Calculated | F(20l) |2 and | F(02l) |2 values for single crystals of micas with different compositions are given for one-, two-, and three-layer polytypes. Transmission powder diffractometry is proposed as a suitable method for the identification of the different groups of mica polytypes from polycrystalline specimens. Calculated powder patterns and the characteristic properties of the diffraction patterns of random and highly oriented aggregates are employed for identification purposes. The individual MDO polytypes are designated by generalized Ramsdell symbols which also contain information about their position in the classification system.

Resümee

Resümee

Klassifikations und Identifikationskriterien für alle maximaler Ordnungsgrad (MOG) Polytype von homo- und meso-oktaedrischen Glimmern, die auf den Intensitätenverteilungen von 20l (13l) und 02l Reflexen beruhen, wurden ausgearbeitet. Die berechneten |F(20l)|2 und |F(02l)|2 Werte für Glimmereinkristalle mit variabler Zusammensetzung und für alle Ein-, Zwei-, und Dreischicht-Polytypen sind angeführt. Als geeignete Methode zur Identifikation von verschiedenen Glimmergruppen in ihren polykristallinen Proben ist Transmissions-Diffraktometrie vorgeschlagen. Der Artikel enthält auch berechnete Pulverdiagramme und ihre Identifikations-charakteristische Eigenschaften für sowohl statistisch- als auch hochorientierte Aggregate. Die einzelnen MOG Polytype sind gekennzeichnet durch verallgemeinerte Ramsdellsche Symbole, die auch Information über ihre Stellung in dem Klassifikationssystem enthalten.

Keywords

Crystal structureMicaOrder-disorderPolytypeSingle crystal X-ray diffractionX-ray powder diffraction
Type
Research Article
Information
Clays and Clay Minerals , Volume 34 , Issue 1 , February 1986 , pp. 53 - 68
Copyright
Copyright © 1986, The Clay Minerals Society

References

Backhaus, K.-O. and >Durovi>c, S., 1984 Polytypism of micas. I. MDO polytypes and their derivation Clays & Clay Minerals 32 453–463.CrossRefGoogle Scholar
Baronnet, A., Pandey, D. and Krishna, P., 1981 Application of the faulted matrix model to the growth of polytype structures in mica J. Crystal Growth 52 963–968.CrossRefGoogle Scholar
Croche, R., 1976 Étude expérimentales et théoriques des corrections d’aberration instrumentales d’un diagramme de diffraction des rayons X Thèse présentée à la Conservatoire Nationale des Arts et Métiers .Google Scholar
Dornberger-Schiff, K., Backhaus, K.-O. and >Durovi>c, S., 1982 Polytypism of micas: OD interpretation, stacking symbols, symmetry relations Clays & Clay Minerals 30 364–374.CrossRefGoogle Scholar
>Durovi>c, S., Weiss, Z. and Backhaus, K.-O., 1984 Polytypism of micas. II. Classification and abundance of MDO polytypes Clays & Clay Minerals 32 464–474.Google Scholar
Guggenheim, S., 1981 Cation ordering in lepidolite Amer. Mineral. 66 1221–1232.Google Scholar
Guggenheim, S. and Bailey, S. W., 1977 The refinement of zinnwaldite-1M in subgroup symmetry Amer. Mineral. 62 1158–1167.Google Scholar
Guinier, A., Bokij, G. B., Boll-Dornberger, K., Cowley, J. M., >Durovi>c, S., Jagodzinski, H., De Krishna, P., Wolf, P. M., Zvyagin, B. B., Cox, D. E., Goodman, P., Hahn, Th., Kuchitsu, K. and Abrahams, S. C., 1984 Nomenclature of polytype structures: Report of the International Union of Crystallography Ad-Hoc Committee on the Nomenclature of Disordered, Modulated and Polytype Structures Acta Crystallogr. A40 399–404.CrossRefGoogle Scholar
Güven, N., 1971 The crystal structure of 2M 1 phengite and 2M 1 muscovite Z. Kristallogr. 134 196–212.Google Scholar
Güven, N. and Burnham, C. W., 1967 The crystal structure of 3T muscovite Z. Kristallogr. 125 163–183.CrossRefGoogle Scholar
Hazen, R. M. and Burnham, C. W., 1973 The crystal structures of one-layer phlogopite and annite Amer. Mineral. 58 889–900.Google Scholar
Krinari, G. A. and Kossowskaya, A. G., 1975 On possibilities of using the oriented preparations of clay minerals for registration of non-basal X-ray diffractions Kristallokhimiya Mineralov i Geolo-gicheskie Problemy .Google Scholar
Plançon, A., Rousseaux, F., Tchoubar, D., Tchoubar, C., Krinari, G. A. and Drits, V. A., 1982 Recording and calculation of hk rods intensities in case of diffraction by highly oriented powders of lamellar samples J. Appl. Crystallogr. 15 509–512.CrossRefGoogle Scholar
Ross, M., Takeda, H. and Wones, D. R., 1966 Mica polytypes: systematic description and identification Science 151 191–193.CrossRefGoogle ScholarPubMed
Sidorenko, O. V., Zvyagin, B. B. and Soboleva, S. V., 1975 Refinement of the crystal structure of dioctahedral mica 1M Kristallografiya 20 543–549.Google Scholar
Sidorenko, O. V., Zvyagin, B. B. and Soboleva, S. V., 1977 Crystal structure of paragonite 3T Kristallografiya 22 976–981.Google Scholar
Sidorenko, O. V., Zvyagin, B. B. and Soboleva, S. V., 1977 Refinement of the crystal structure of paragonite 2M 1 by high-voltage electron diffraction Kristallografiya 22 971–975.Google Scholar
Soboleva, S. V., Sidorenko, O. V. and Zvyagin, B. B., 1977 Crystal structure of paragonite 1M Kristallografiya 22 510–514.Google Scholar
Smith, J. V. and Yoder, H. S., 1956 Experimental and theoretical studies of the mica polymorphs Mineral. Mag. 31 209–235.Google Scholar
Weiss, Z., Krají>cek, J., Smr>cok, L. and Fiala, J., 1983 A computer X-ray quantitative phase analysis J. Appl. Crystallogr. 16 493–497.CrossRefGoogle Scholar
Zhoukhlistov, A. P., Zvyagin, B. B., Soboleva, S. V. and Fedotov, A. F., 1973 The crystal structure of the dioctahedral mica 2M 2 determined by high-voltage electron diffraction Clays & Clay Minerals 21 465–470.CrossRefGoogle Scholar
Zvyagin, B. B., 1967 Electron Diffraction Analysis of Clay Mineral Structures .CrossRefGoogle Scholar
Zvyagin, B. B., Vrublevskaya, Z. V., Zhoukhlistov, A. P., Sidorenko, O. V., Soboleva, S. V. and Fedotov, A. F., 1979 High-Voltage Electron Diffraction in the Investigation of Layered Minerals .Google Scholar