Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-05T14:48:41.089Z Has data issue: false hasContentIssue false
  • English
  • Français

Cation ordering in lepidolite and biotite studied by X-ray photoelectron diffraction

Published online by Cambridge University Press:  09 July 2018

L. A. Ash ,
S. Evans  and
A. G. Hiorns
L. A. Ash
Affiliation:
Edward Davies Chemical Laboratories, University College of Wales, Aberystwyth, Dyfed SY23 INE
S. Evans
Affiliation:
Edward Davies Chemical Laboratories, University College of Wales, Aberystwyth, Dyfed SY23 INE
A. G. Hiorns
Affiliation:
Edward Davies Chemical Laboratories, University College of Wales, Aberystwyth, Dyfed SY23 INE
Get access Rights & Permissions [Opens in a new window]

Abstract

Comprehensive X-ray photoelectron diffraction (XPD) studies have revealed octahedral cation ordering in a 1M lepidolite and in a 1M biotite. In the lepidolite (from Høydaler, Telemark, Norway), all three octahedral sites are differentiated, with Li and Mn concentrated in the trans M(1) site and Al in cis M(3); M(2) contains all three cations. In the biotite, the major cations do not order but Ti, present at only 1·2% concentration, preferentially occupies the two cis sites, information which is available uniquely from XPD. Long-range tetrahedral ordering should be detectable by XPD, but was not found in either mica.

Type
Research Article
Information
Clay Minerals , Volume 22 , Issue 4 , December 1987 , pp. 375 - 386
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1987

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Ash, L.A., Clark, S.L., Evans, S. & Hiorns, A.G. (1987) X-ray photoelectron diffraction studies of the micas lepidolite and biotite. J. Chem. Soc., Dalton Trans. (in press).Google Scholar
Bailey, S.W. (1984a) Crystal chemistry of the true micas. Reviews in Mineralogy 13, 13–60.Google Scholar
Bailey, S.W. (1984b) Review of cation ordering in micas. Clays Clay Miner. 32, 81–92.Google Scholar
Dyar, M.D. (1987) A review of Mössbauer data on trioctahedral micas: Evidence for tetrahedral Fe3+ and cation ordering. Am. Miner. 72, 102–112.Google Scholar
Evans, S., Adams, J.M. & Thomas, J.M. (1979) The surface structure and composition of layered silicate minerals: novel insights from X-ray photoelectron diffraction, K-emission spectroscopy and cognate techniques. Phil. Trans. Roy. Soc. Lond. A292, 563–591.Google Scholar
Evans, S. & Raftery, E. (1980a) X-ray photoelectron studies of titanium in biotite and phlogopite. Clay Miner. 15, 209–218.CrossRefGoogle Scholar
Evans, S. & Rafrery, E. (1980b) Quantitative X-ray photoelectron diffraction studies of single-crystal silicates. Sol. St. Commun. 33, 1213–1215.Google Scholar
Evans, S. & Elliott, D.A. (1982) Interfacing AEI/Kratos electron spectrometers to a microcomputer for data acquisition and processing. Surface Interface Analysis 4, 267–270.Google Scholar
Evans, S. & Raftery, E. (1982a) X-ray photoelectron diffraction studies of lepidolite. Clay Miner. 17,443–452.CrossRefGoogle Scholar
Evans, S. & Raftery, E. (1982b) X-ray photoelectron diffraction studies of sodium in biotite. J. Chem. Research (S) 170–171.Google Scholar
Guggenheim, S. (1981) Cation ordering in lepidolite. Am. Miner. 66, 1221–1232.Google Scholar
Trenan, R., Osterwalder, J. & Fadley, C.S. (1987) Single-scattering-cluster description of substrate X-ray photoelectron diffraction and its relationship to Kikuchi bands. J. Electron Spectrosc. Relat. Phenom. 42, 187–215.Google Scholar