Hostname: page-component-8448b6f56d-gtxcr Total loading time: 0 Render date: 2024-04-24T16:37:34.472Z Has data issue: false hasContentIssue false
  • English
  • Français

Microtexture and water content of alkali feldspar by Fourier-transform infrared microspectroscopy

Published online by Cambridge University Press:  05 July 2018

Satoshi Nakano ,
K. Makino  and
T. Eriguchi
Satoshi Nakano*
Affiliation:
Department of Natural Science, Faculty of Education, Shiga University, Hiratsu 2-5-1, Otsu 520-0862, Japan
K. Makino
Affiliation:
Department of Geological Sciences, Faculty of Science, Shinshu University, Asahi 3-1-1, Matsumoto 390-8621, Japan
T. Eriguchi
Affiliation:
Ikeda 15-6, Nagakute Town, Aichi 480-1131, Japan
*
*E-mail: nakano@sue.shiga-u.ac.jp
Get access Rights & Permissions [Opens in a new window]

Abstract

Alkali feldspar (Or64.5Ab34.8An0.6) in a granite pegmatite from Hanazono, Kosei Town, Shiga Prefecture, southwest Japan, consists of two types of regions observable with the naked eye: one is colourless and transparent, and the other is pale pink and opaque. The colourless regions are clear, cryptoperthitic and almost free of micropores, and the pale pink regions are turbid, vein microperthitic and with many micropores visible under a microscope. The latter regions may have been changed from the former by the catalytic action of water. Integrated absorbance values were calculated for both types of regions from Fourier-transform infrared microspectra in the range 2500–4000 cm−1. These values were used as semi-quantitative parameters of water contents. The turbid regions are much more enriched in water compared to the clear regions. The chemical states of water in both regions were also evaluated. Water in the turbid regions is estimated to be present mainly as H2O inclusions in micropores and to be present to a lesser extent as structural OH groups. A small amount of water in the clear regions may be present as structural OH groups. The water distribution in the feldspar records the cooling history of hydrothermal reactions causing the coarsening of cryptoperthites to microperthites.

Keywords

alkali feldsparFT-IRmicrospectroscopycryptoperthitemicroperthitehydrothermalmicroporeH2O inclusionOH group
Type
Research Article
Information
Mineralogical Magazine , Volume 65 , Issue 5 , October 2001 , pp. 675 - 683
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2001

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

Aines, R.D. and Rossman, G.R. (1984) Water in minerals? A peak in the infrared. J. Geophys. Res., 89, 4059–71.CrossRefGoogle Scholar
Behrens, H. and Müller, G. (1995) An infrared spectroscopic study of hydrogen feldspar (HAlSi3O8). Mineral. Mag., 59, 15–24.CrossRefGoogle Scholar
Beran, A. (1986) A model of water allocation in alkali feldspar, derived from infrared-spectroscopic investigations. Phys. Chem. Miner., 13, 306–10.CrossRefGoogle Scholar
Beran, A. (1987) OH groups in nominally anhydrous framework structures: an infrared spectroscopic investigation of danburite and labradorite. Phys. Chem. Miner., 14, 441–5.CrossRefGoogle Scholar
Brown, W.L. and Parsons, I. (1994) Feldspars in igneous rocks. Pp. 449–99 in: Feldspars and their Reactions (Parsons, I., editor). NATO ASI Series, C421. Reidel Publishing Co., Dordrecht, The Netherlands.CrossRefGoogle Scholar
Deer, W.A., Howie, R.A. and Zussman, J. (1963) Rock-forming Minerals. Vol. 4. Framework silicates. Longmans, London.Google Scholar
Hofmeister, A.M. and Rossman, G.R. (1985 a) A spectroscopic study of irradiation coloring of amzonite: Structurally hydrous, Pb-bearing feldspar. Amer. Mineral., 70, 794–804.Google Scholar
Hofmeister, A.M. and Rossman, G.R. (1985 b) A model for the irradiative coloration of smoky feldspar and the inhibiting influence of water. Phys. Chem. Miner., 12, 324–32.CrossRefGoogle Scholar
Ishihara, S. (1971) Modal and chemical composition of the granitic rocks related to the major molybdenum and tungsten deposits in the Inner zone of southwest Japan. J. Geol. Soc. Japan. 77, 441–52.CrossRefGoogle Scholar
Kronenberg, A.K. and Wolf, G.H. (1990) Fourier transform infrared spectroscopy determinations of intergranular water content in quartz-bearing rocks: implications for hydrolytic weakening in the laboratory and within the Earth. Tectonophyics, 172, 255–71.CrossRefGoogle Scholar
Lalonde, A.E. and Martin, R.F. (1983) The Baie-des-Moutons syenitic complex, La Tabatiere, Quebec I. Petrography and feldspar mineralogy. Canad. Mineral., 21, 65–79.Google Scholar
Lee, M.R. and Parsons, I. (1997) Dislocation formation and albitization in alkali feldspars from the Shap granite. Amer. Mineral., 82, 557–70.CrossRefGoogle Scholar
Lee, M.R., Waldron, K.A. and Parsons, I. (1995) Exsolution and alteration microtextures in alkali feldspar phenocrysts from the Shap granite. Mineral. Mag., 59, 63–78.CrossRefGoogle Scholar
Libowitzky, E. and Rossmann, G.R. (1997) An IR absorption calibration for water in mineral. Amer. Mineral., 82, 1111–5.CrossRefGoogle Scholar
Martin, R.F. and Donnay, G. (1972) Hydroxyl in the mantle. Amer. Mineral., 57, 554–70.Google Scholar
McMillan, P.F. and Hofmeister, A.M. (1988) Infrared and Raman spectroscopy. Pp. 99–159 in: Spectroscopic Methods in Mineralogy and Geology (Hawthorne, F.C., editor). Reviews in Mineralogy, 18. Mineralogical Society of America, Washington, D.C. CrossRefGoogle Scholar
Nakano, S. (1997) Calcium distribution in a microperthite from the Nango pegmatite, Otsu City, Japan. Earth Sci. (Chikyu Kagaku), 51, 51–9.Google Scholar
Nakano, S. (1998) Calcium distribution patterns in alkali feldspar in a quartz syenite from Oki-Dozen, southwest Japan. Mineral. Petrol., 63, 35–48.CrossRefGoogle Scholar
Nakano, S. and Eriguchi, T. (1997) Alkali feldspar in granite pegmatite from Hanazono, Kosei Town, Shiga Prefecture, Japan. Mem. Fac. Educ. Shiga Univ., 47, 25–39 (Japanese with English abstract).Google Scholar
Nakano, S., Hosokawa, E. and Akai, J. (1997) Calcium distribution in alkali feldspar of a quartz syenite from Cape Ashizuri, Shikoku, southwest Japan. Mineral. J., 19, 75–86.CrossRefGoogle Scholar
Nakashima, S., Ohki, S. and Ochiai, S. (1989) Infrared microspectroscopy analysis of the chemical state and spatial distribution of hydrous species in minerals. Geochem. J., 23, 57–64.CrossRefGoogle Scholar
Niimi, N., Aikawa, N. and Shinoda, K (1999) The infrared absorption band at 3596 cm −1 of the recrystallized quartz from Mt. Takamiyama, Southwest Japan. Mineral. Mag., 63, 693–701.CrossRefGoogle Scholar
Parsons, I. (1978) Feldspars and fluids in cooling plutons. Mineral. Mag., 42, 1–17.CrossRefGoogle Scholar
Parsons, I. and Brown, W.L. (1984) Feldspars and the thermal history of igneous rocks. Pp. 317–71 in: Feldspars and Feldspathoids. NATO ASI Series. C137. Reidel, Publishing Co., Dordrecht, The Netherlands.CrossRefGoogle Scholar
Paterson, M.S. (1982) The determination of hydroxyl by infrared absorption in quartz, silicate glasses and similar materials. Bull. Mineral., 105, 20–9.Google Scholar
Rossman, G.R. (1988) Vibration spectroscopy of hydrous components. Pp. 193–206 in: Spectroscopic Methods in Mineralogy and Geology. (Hawthorne, F.C., editor). Reviews in Mineralogy, 18. Mineralogical Society of America, Washington, D.C. CrossRefGoogle Scholar
Sawada, Y. and Itaya, T. (1994) K-Ar ages of a Late Cretaceous granitic ring complex around southern Lake Biwa. J. Geol. Soc. Japan. 99, 975–90 (Japanese with English abstract).CrossRefGoogle Scholar
Shinoda, K. and Aikawa, N. (1993) Polarized infrared absorbance spectra of anoptically anisotropic crystal; application to the orientation of OH-dipole in quartz. Phy. Chem. Miner., 20, 308–14.Google Scholar
Smith, J.V. and Brown, W.L. (1988) Feldspar Mineralogy 1. Springer-Verlag, Berlin.CrossRefGoogle Scholar
Tatekawa, M. (1985) Studies on alkali moonstone. Tsukumo Earth Sci. (Earth Sci Rep. Coll. Libral Arts Sci, Kyoto Univ.), 20, 1–12 (Japanese with English abstract).Google Scholar
Tatekawa, M. and Kanezaki, M. (1969) On the perthitic structure of moonstones (I). Mineral. J., 6, 7–16.CrossRefGoogle Scholar
Tatekawa, M., Kanezaki, M. and Nakano, S. (1972) On the perthitic structure of moonstone (II). Mineral. J., 7, 9–28.CrossRefGoogle Scholar
Waldron, K., Parsons, I. and Brown, W.L. (1993) Solution-redeposition and the orthoclase-microcline transformation: evidence from granulites and relevance to 18O exchange. Mineral. Mag., 57, 687–95.CrossRefGoogle Scholar
Walker, F.D.L., Lee, M.R. and Parsons, I (1995) Micropores and micropermeable texture in alkali feldspars: geochemical and geophysical implications. Mineral. Mag., 59, 505–34.CrossRefGoogle Scholar
Worden, R., Walker, F.D., Parsons, I. and Brown, W.L. (1990) Development of microporosity, diffusion channels and deuteric coarsening in perthitic alkali feldspars. Contrib. Mineral. Petrol., 104, 507–14.CrossRefGoogle Scholar
Yoshida, G., Nishihashi, H., Takemoto, K., Hisada, Y., Nishimura, S., Saita, T., Sawada, K. and Nakano, S. (1991) Granitic masses around Lake Biwa. Pp. 423–49 in: Landscape and Environment of Shiga. Foundation for Nature Conservation, Shiga Prefecture, Japan.Google Scholar
Yund, R.A. (1983) Diffusion in feldspars. Pp. 203–22 in: Feldspar Mineralogy (Ribbe, P.H., editor). Reviews in Mineralogy, 2. Mineralogical Society of America, Washington, D.C. CrossRefGoogle Scholar