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Determination of white K-mica polytype ratios: comparison of different XRD methods

Published online by Cambridge University Press:  09 July 2018

M. Dalla Torre ,
W. B. Stern  and
M. Frey
M. Dalla Torre
Affiliation:
Mineralogisch-Petrographisches Institul, University of Basel, Bernoullislrasse 30, CH-4056 Basel, Switzerland
W. B. Stern
Affiliation:
Mineralogisch-Petrographisches Institul, University of Basel, Bernoullislrasse 30, CH-4056 Basel, Switzerland
M. Frey
Affiliation:
Mineralogisch-Petrographisches Institul, University of Basel, Bernoullislrasse 30, CH-4056 Basel, Switzerland
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Abstract

Six different X-ray diffraction (XRD) methods for determining the relative amounts of 2M1 and 1M white K-mica polytypes were compared. Unoriented samples of different concentrations of the two polytypes were prepared using the technique described by Handschin & Stern (19X9) and Stern (1991). An evaluation of different XRD techniques reported in the literature revealed that the method proposed by Caillére et al. (1982) is the most accurate. The main reasons are the use of the 1M 112 and 2M1 025 reflections with relatively strong intensities, showing no superposition with feldspar reflections, and being only slightly affected by sample preparation effects.

Type
Research Article
Information
Clay Minerals , Volume 29 , Issue 5 , December 1994 , pp. 717 - 726
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1994

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References

Brindley, G.W. (1980) Quantitative X-ray Mineral Analysis of Clays. Pp. 411—438 in: Crystal Structures of Clay Minerals and their X-ray Identification (Brindley, G.W. & Brown, G., editors). Mineralogical Society, London.CrossRefGoogle Scholar
Caillére, S., Henin, S. & Rautureau, M. (1982) Mineralogie des Argiles. Act. Sci. Agr. de LT.N.R.A. 8. Masson, Paris.Google Scholar
Dimarco, M.J., Ferrell, R.A. & Lowe, D.R. (1989) Polytypes of 2:1 dioctahedral micas in silicified volcaniclastic sandstones, Warrawoona Group, Pilbara Block, Western Australia. Am. J. Sci. 289, 649–660.CrossRefGoogle Scholar
Frey, M. (1987) Very low-grade metamorphism of clastic sedimentary rocks. Pp. 9-58 in: Low Temperature Metamorphism (Frey, M., editor). Blackie, Glasgow.Google Scholar
Handschin, R. & Stern, W.B. (1989) Preparation and analysis of microsamples for X-ray diffraction and X-ray fluorescence. Siemens Analytical Application Note 319.Google Scholar
Levinson, A.A. (1955) Studies in the mica group: polymorphism among illites and hydrous micas. Am. Miner. 40, 41–49.Google Scholar
Lonker, S.W. & Fitzgerald, J.D. (1990) Formation of coexisting \M and 2M polytypes in illite from an active hydrothermal system. Am. Miner. 75, 1282–89.Google Scholar
Massonne, H.-J. & Schreyer, W. (1986) High-pressure syntheses and X-ray properties of white micas in the system K2O-MgO-Al2O3-SiO2-H2O. N. lb. Miner. Abh. 153, 177–215.Google Scholar
Maxwell, D.T. & Howell, J. (1967) High-grade diagenesis and low-grade metamorphism of illite in the Precambrian Belt Series. Am. Miner. 52, 843–857.Google Scholar
Mukhamei-Galeyev, A.P., Zoiov, A.V., Pokrovskiy, V.A. & Kotova, Z.Y. (1986) Stability of the \M and 2M, polytypic modifications of muscovite as determined at 300°C at saturation steam pressure. Dokl. Acad. Sci. USSR, Earth Sci. Sect. 278, 140–143.Google Scholar
Reynolds, R.C. (1963) Potassium-rubidium ratios and polymorphs in illites and microclines from the clay fraction of Proterozoic carbonate rocks. Geochim. Cosmochim. Actall, 1097-1112.CrossRefGoogle Scholar
Schwander, H., Hunziker, J.C. & Stern, W.B. (1968) Zur Mineralchemie von Hellglimmern in den Tessineralpen. Schweiz. Miner. Tetrogr. Mitt. 48, 357–390.Google Scholar
Stalder, H.A. (1973) Die Mineralfunde der penninischen, ost- und sudalpinen Gebiete: Fundgebiet 8: Adula-Domleschg. P. 224 in: Die Mineralfunde der Schweiz. (Parker, R.L., editor). Verlag Wepf & Co. Basel.Google Scholar
Stern, W.B. (1991) Preparation and cell refinement of mica microsamples. Schweiz. Miner. Tetrogr. Mitt. 71, 151–159.Google Scholar
Terrenhorst, R.T. & Corbato, C.E. (1993) Quantitative analysis of mixtures of \M and 2M\ dioctahedral micas by X-ray diffraction. Clays Clay Miner. 41, 45–55.CrossRefGoogle Scholar
Velde, B. & Hower, J. (1963) Petrological significance of illite polymorphism in Paleozoic sedimentary rocks. Am. Miner. 48, 1239–1254.Google Scholar
Velde, B. (1965) Experimental determination of muscovite polytypes stabilities. Am. Miner. 50, 436–449.Google Scholar
Wilcoxon, B.R., Ferrell, R.E., Sassen, R. & Wade, W.J. (1990) Illite polytype distribution as an indicator of thermal maturity in the Smackover Formation of Manila Embayment, southwest Alabama. Org. Geochem. 15, 1–8.CrossRefGoogle Scholar
Yang, C. & Hesse, R. (1991) Clay minerals as indicators of diagenetic and anichimetamorphic grade in an overthrust belt, external domain of southern Canadian Appalachians. Clay Miner. 26, 211–231.CrossRefGoogle Scholar
Yoder, H.S. & Eugster, H.P. (1955) Synthetic and natural muscovites. Geochim. Cosmochim. Acta 8, 225–280.CrossRefGoogle Scholar