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High-angle annular dark field scanning transmission electron microscopic (HAADF-STEM) study of Fe-rich 7 Å–14 Å interstratified minerals from a hydrothermal deposit

Published online by Cambridge University Press:  02 January 2018

Sayako Inoué  and
Toshihiro Kogure
Sayako Inoué*
Affiliation:
Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
Toshihiro Kogure
Affiliation:
Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
*
*E-mail: [email protected]
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Abstract

The distribution of octahedral cations in the two component layers of a 7 Å–14 Å interstratified mineral with a bulk chemical composition (Fe4.122+Mg0.07Mn0.01Al1.69□0.11)(Si2.56Al1.44) O10(OH)8 was investigated using high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) in combination with the image simulations. In the 14 Å component layers, comparison between the observed and simulated images revealed that the M4 sites of the interlayer sheets were occupied preferentially by Al together with a small amount of Fe; the other M1, M2 and M3 sites were occupied by dominant Fe and residual Al in equal proportions. Two types of octahedral sheets with disordered and ordered cation distributions were recognized in the 7 Å component layers. The two types of sheets were similar to the octahedral sheet of the 2:1 layer and the interlayer sheet in the 14 Å layer above, respectively. Irregular vertical stacking and lateral contact of the different component layers in structure and chemistry characterized the interstratification, which may be caused by rapid precipitation and accretion of the component layers in hydrothermal environments.

Keywords

HAADF-STEMinterstratified mineralsFe-rich chloriteberthierineoctahedral cation distribution
Type
Research Article
Information
Clay Minerals , Volume 51 , Issue 4 , September 2016 , pp. 603 - 613
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2016

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Footnotes

†

This work was originally presented during the session ‘The many faces of chlorite’, part of the Euroclay 2015 conference held in July 2015 in Edinburgh, UK.

References

Ahn, J.H. & Peacor, D.R. (1985) Transmission electron microscopic study of diagenetic chlorite in Gulf Coast argillaceous sediments. Clays and Clay Minerals, 33, 228–236.CrossRefGoogle Scholar
Bailey, S.W. (1969) Polytypism of trioctahedral 1:1 layer silicates. Clays and Clay Minerals, 17, 355–371.CrossRefGoogle Scholar
Bailey, S.W. (1988a) Chlorites: structures and crystal chemistry. pp. 347-403 in: Hydrous Phyllosilicates (Exclusive of Micas) (S.W. Bailey, editor). Vol. 19, Reviews in Mineralogy, Mineralogical Society of America, Washington, D.C. Google Scholar
Bailey, S.W. (1988b) Structures and compositions of other trioctahedral 1:1 phyllosilicates. Pp. 169–188 in: Hydrous Phyllosilicates (Exclusive of Micas) (S.W. Bailey, editor). Vol. 19, Reviews in Mineralogy, Mineralogical Society of America, Washington, D.C. Google Scholar
Bailey, S.W. & Brown, G. (1962) Chlorite polytypism: I. regular and semirandom one-layer structures. American Mineralogist, 47, 819–850.Google Scholar
Baronnet, A. (1997) Equilibrium and kinetic processes for polytypes and polysome generation. Pp. 119–152 in: Modular Aspects of Minerals (S. Merlino, editor). Vol. 1, EMU Notes in Mineralogy, Eötvös University Press, Budapest.CrossRefGoogle Scholar
Bish, D.L. & Giese, R. (1981) Interlayer bonding in IIb chlorite. American Mineralogist, 66, 1216–1220.Google Scholar
Bourdelle, F., Parra, T., Chopin, C. & Beyssac, O. (2013) A new chlorite geothermometer for diagenetic to low-grade metamorphic conditions. Contributions to Mineralogy and Petrology, 165, 723–735.Google Scholar
Hillier, S. (1994) Pore-Lining Chlorites in siliciclastic reservoir sandstones: electron-microprobe, SEM and XRD data, and implications for their origin. Clay Minerals, 29, 665–679.CrossRefGoogle Scholar
Inoué, S. (2016) Study of Fe-rich chlorite and 7Å-14 Å interstratified minerals using high-resolution electron microscopy. PhD Thesis, the University of Tokyo, Japan, 132 pp.Google Scholar
Inoué, S. & Kogure, T. (2016) High-resolution transmission electron microscopy (HRTEM) study of stacking irregularity in Fe-rich chlorite from selected hydrother-mal are deposits. Clays and Clay Minerals, 64, 131–144.CrossRefGoogle Scholar
Inoue, A., Meunier, A., Patrier-Mas, P., Rigault, C., Beaufort, D. & Vieillard, P. (2009) Application of chemical geothermometry to low-temperature trioctahe-dral chlorites. Clays and Clay Minerals, 57, 371–382.Google Scholar
Ishizuka, K. (2002) A practical approach for STEM image simulation based on the FFT multislice method. Ultramicroscopy, 90, 71–83.Google Scholar
Jiang, W.T., Peacor, D.R. & Slack, J.F. (1992) Microstructures, mixed layering, and polymorphism of chlorite and retrograde berthierine in the Kidd Creek massive sulfide deposit, Ontario. Clays and Clay Minerals, 40, 501–514.Google Scholar
Kilaas, R. (1998) Optimal and near-optimal filters in high-resolution electron microscopy. Journal of Microscopy, 190, 45–51.CrossRefGoogle Scholar
Kogure, T. & Drits, V.A. (2010) Structural changes in celadonite and cis-vacant illite by electron radiation in TEM. Clays and Clay Minerals, 58, 522–531.Google Scholar
Kogure, T. & Okunishi, E. (2010) Cs-corrected HAADF-STEM imaging of silicate minerals. Journal of Electron Microscopy, 59, 263–271.CrossRefGoogle ScholarPubMed
Marks, L.D. (1996) Wiener-filter enhancement of noisy HREM images. Ultramicroscopy, 62, 43–52.CrossRefGoogle ScholarPubMed
Pennycook, S.J. & Jesson, D.E. (1992) Atomic resolution Z-contrast imaging of interfaces. Acta Metallurgica et Materialia, 40, S149–S159.Google Scholar
Rule, A.C. & Bailey, S. (1987) Refinement of the crystal structure of a monoclinic ferroan clinochlore. Clays and Clay Minerals, 35, 129–138.CrossRefGoogle Scholar
Shikazono, N. (2003) Geochemical and Tectonic Evolution of Arc-Backarc Hydrothermal Systems: Implication for the Origin ofKuroko and Epithermal Vein-Type Mineralizations and the Global Geochemical Cycle. Elsevier, Amsterdam, 463 pp.Google Scholar
Slack, J.F., Jiang, W.T., Peacor, D.R. & Okita, P.M. (1992) Hydrothermal and metamorphic berthierine from the Kidd Creek volcanogenic massive sulfide deposit, Timmins, Ontario. The Canadian Mineralogist, 30, 1127–1142.Google Scholar
Smyth, J.R., Dyar, M.D., May, H.M., Bricker, O.P. & Acker, J.G. (1997) Crystal structure refinement and Mössbauer spectroscopy of an ordered, triclinic clinochlore. Clays and Clay Minerals, 45, 544–550.Google Scholar
Welch, M.D., Barras, J. & Klinowski, J. (1995) A multi-nuclear NMR study of clinochlore. American Mineralogist, 80, 441–447.Google Scholar
Wicks, F. & O'Hanley, D.S. (1988) Serpentine minerals; structures and petrology. Pp. 91–167 in: Hydrous Phyllosilicates (Exclusive of Micas) (S.W Bailey, editor). Vol. 19, Reviews in Mineralogy, Mineralogical Society of America, Washington D.C. Google Scholar
Xu, H.F. & Veblen, D.R. (1996) Interstratification and other reaction microstructures in the chlorite-berthierine series. Contributions to Mineralogy and Petrology, 124, 291–301.Google Scholar
Xu, H., Shen, Z., Konishi, H. & Luo, G. (2014) Crystal structure of Guinier-Preston zones in orthopyroxene: Z-contrast imaging and ab inito study. American Mineralogist, 99, 2043–2048.CrossRefGoogle Scholar
Zheng, H. & Bailey, S.W. (1989) Structures of intergrown triclinic and monoclinic IIb chlorites from Kenya. Clays and Clay Minerals, 37, 308–316.Google Scholar