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Supergene Origin of the Lastarria Kaolin Deposit, South-Central Chile, and Paleoclimatic Implications

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Clays and Clay Minerals

Abstract

The residual kaolin deposits near Lastarria, South-Central Chile, were formed by weathering of subvolcanic quartz porphyry stocks, which intruded the metamorphic basement of the Coastal Cordillera. The clay fractions (<2 µm) consist mainly of poorly-ordered, very fine-grained kaolinite and lath-shaped illite (17–38 wt. %) with minor amounts of quartz, sanidine, and goethite. A sample from the top of the deposit contains major quantities of gibbsite morphologically indistinguishable from kaolinite flakes. The gibbsite-free clays contain 35.5–36.6 wt. % Al2O3, 0.4–2.6 wt. % Fe2O3, 1.3–3.9 wt. % K2O, and have low TiO2 concentrations (<0.02 wt. %). The absence of quartz veining, the abundance of melt inclusions, and the scarcity of secondary fluid inclusions in quartz phenocrysts from altered rocks imply a lack of significant hydrothermal activity in the quartz porphyries. The δ 18O and δD values of the kaolins indicate formation in a weathering environment at significantly higher annual mean air temperatures (∼12°C) than present mean temperatures of ∼9.4°C. Uplift of the region alone probably cannot account for the change in climate. The stable isotope composition of gibbsite is consistent with an origin of desilication of kaolinite at superficial temperatures. Various criteria proposed to distinguish supergene from hypogene kaolins are discussed.

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References

  • Alderton, D.H.M. and Rankin, A.K. (1983) The character and evolution of hydrothermal fluids associated with the kaolinized St. Austell granite, SW England. Journal of the Geological Society (London), 140, 297–309.

    Article  Google Scholar 

  • Arribas, A., Jr., Cunningham, C.G., Rytuba, J.J., Rye, R.O., Kelly, W.C., Podwysocki, M.H., McKee, E.H., and Tosdal, R.M. (1995) Geology, geochronology, fluid inclusions and isotope geochemistry of the Rodalquilar gold alunite deposit, Spain. Economic Geology, 90, 795–822.

    Article  Google Scholar 

  • Bigeleisen, J., Perlman, M.L., and Presser, H.C. (1952) Conversion of hydrogenic materials to hydrogen for isotopic analysis. Analytical Chemistry, 24, 1356–1357.

    Article  Google Scholar 

  • Bird, M.I., Chivas, A.R., and Andrew, A.S. (1989) A stableisotope study of lateritic bauxites. Geochimica et Cosmochimica Acta, 53, 1411–1420.

    Article  Google Scholar 

  • Bird, M.I., Longstaffe, F.J., Fyfe, W.S., Tazaki, K., and Chivas, A.R. (1994) Oxygen-isotope fractionation in gibbsite: synthesis experiments versus natural samples. Geochimica et Cosmochimica Acta, 58, 5267–5277.

    Article  Google Scholar 

  • Bray, C.J. and Spooner, E.T.C. (1983) Sheeted vein Sn-W mineralization and greisenization associated with economic kaolinization, Goonbarrow china clay pit, St. Austell, Cornwall, England: geologic relationships and geochronology. Economic Geology, 78, 1064–1089.

    Article  Google Scholar 

  • Bristow, C.M. (1977) A review of the evidence for the origin of the kaolin deposits in S.W. England. Proceedings of 8th International Kaolin Symposium and Meeting on Alunite, Madrid-Rome, 19 pp.

    Google Scholar 

  • Chen, C-H., Liu, K-K., and Shieh, Y-N. (1988) Geochemical and isotopic studies of bauxitization in the Tatun volcanic area, northern Taiwan. Chemical Geology, 68, 41–56.

    Article  Google Scholar 

  • Clayton, R.N. and Mayeda, T.D. (1963) The use of bromine pentafluoride in the extraction of oxygen from oxides and silicates for analysis. Geochimica et Cosmochimica Acta, 27, 43–52.

    Article  Google Scholar 

  • Cravero, F., Domínguez, E. and Murray, H.H. (1991) Valores δ18O y δD en caolinitas indicatores de un clima templado-humedo para el Jurásico superior-Cretácio inferior de la Patagonia. Revista de la Asociacion Geologica Argentina, 46, 20–25.

    Google Scholar 

  • Crowley, T.J. and North, G.R. (1991) Paleoclimatology. Oxford University Press, New York, 183–211.

    Google Scholar 

  • Dansgaard, W. (1964) Stable isotopes in preciptiation. Tellus, 16, 436–468.

    Article  Google Scholar 

  • Dill, H.G., Bosse, H.-R., Henning, K.-H., Fricke, A., and Ahrendt, H. (1997) Mineralogical and chemical variations in hypogene and supergene kaolin deposits in a mobile fold belt of the Central Andes of northwestern Peru. Mineralium Deposita, 32, 149–163.

    Article  Google Scholar 

  • Domínguez, E. (1990) δl8O‰, δ34S ‰, δD ‰ en pirita y caolinita como indicatores de procesos hidrotermales mag-máticos en Andacollo, Neuquén. (nota breve). Revista de la Asociacion Geologica Argentina, 45, 403–406.

    Google Scholar 

  • Domfnguez, E. and Murray, H.H. (1995) Genesis of the Chubut river valley kaolin deposits, Argentina, and their industrial applications. In Clays Controlling the Environment: Proceedings of the 10th International Clay Conference Adelaide, Australia 1993, G.J. Churchmann, R.W. Fitzpatrick, and R.A. Eggleton, eds., CSIRO Publishing, Melbourne, 129–134.

    Google Scholar 

  • Fontes, J.C. (1980) Environmental isotopes in groundwater hydrology. In Handbook of Environmental Isotope Geochemistry, Volume I, P. Fritz and J.C. Fontes, eds., Elsevier, Amsterdam, 179–226.

    Google Scholar 

  • Gilg, H.A. and Sheppard, S.M.E (1996) Hydrogen isotope fractionation between kaolinite and water revisited. Geochimica et Cosmochimica Acta, 60, 529–533.

    Article  Google Scholar 

  • Hayase, K. (1969) Génesis del yacimiento de caolíh de la mina “Villegas”, provincia de Chubut, República Argentina. Revista de la Associacion Geologica Argentina, 24, 55–71.

    Google Scholar 

  • Hedenquist, J.W., Izawa, E., Arribas, A., and White, N.C. (1996) Epithermal gold deposits: styles, characteristics and exploration. Journal of the Society of Resource Geology Special Publication, 1, 1–16.

    Google Scholar 

  • Hervé, F., Pankhurst, R.J., Brook, M. Alfaro, G., Frutos, J., Miller, H., Schira, W., and Amstutz, C. (1990) Rb-Sr and Sm-Nd data from some massive sulfide occurrences in the metamorphic basement of South-Central Chile. In Strata-bound Ore Deposits in the Andes, L. Fontboté, G.C. Amstutz, M. Cardozo, E. Cedillo, and J. Frutos, eds., Springer Verlag, Berlin, 221–228.

    Chapter  Google Scholar 

  • Heyer, E. (1993) Witterung und Klima. B.G. Teubner, Leipzig, 344 pp.

    Book  Google Scholar 

  • Hufmann, L., Miller, H., and Alfaro, G. (1997a) Ophiolithabfolge in der südchilenischen Küstenkordillere mit Backarc Beckensignatur. Berichte der Deutschen Mineralogischen Gesellschaft, Supplement to European Journal of Mineralogy, 9, 166.

    Google Scholar 

  • Hufmann, L., Miller, H., and Alfaro, G. (1997b) Ocean floor magmatic rocks within the accretionary belt of Cerros de Maulén area, Coastal Range, IX. región, Chile. VIII Congreso Geologico Chileno Antofagasta Actas, 3, 1650–1655.

    Google Scholar 

  • IAEA/WMO. (1994) Global Network for Isotopes in Precipitation (GNIP) Database. IGBP PAGES/World Data Center-A for Paleoclimatology Data Contribution Series # 94–005. NOAA/NGDC Paleoclimatology Program, Boulder, Colorado, (accessible through https://doi.org/www.Aaea.or.at/programs/ri/gnip/gnipmain.htm)

    Google Scholar 

  • Imguez Rodriguez, A.M. (1982) Basaltic and rhyolitic rocks as parent materials of halloysite in Argentine deposits. Developments in Sedimentology, 35, 605–612.

    Google Scholar 

  • Keller, W.D. (1969) Classification and problems of hydro-thermal refractory clay deposits in Mexico. In Proceedings of the International Clay Conference, Tokyo, Volume 1, L. Heller, ed., Israel University Press, 305–312.

    Google Scholar 

  • Keller, W.D. (1970) Discussion of J. Konta: Comparison of the proofs of hydrothermal and supergene kaolinization in two areas of Europe. In Proceedings of the International Clay Conference, Tokyo, Volume 2, L. Heller, ed., Israel University Press, 91–93.

    Google Scholar 

  • Keller, W.D. (1976a) Scan electron micrographs of kaolins collected from diverse environments of origin—I. Clays and Clay Minerals, 24, 107–113.

    Article  Google Scholar 

  • Keller, W.D. (1976b) Scan electron micrographs of kaolins collected from diverse environments of origin—II. Clays and Clay Minerals, 24, 114–117.

    Article  Google Scholar 

  • Keller, W.D. (1978) Scan electron micrographs of the kaolinization process including examples from the Bohemian Massif. Schriftenreihe fuer Geologische Wissenschaften, Berlin, 11, 89–108.

    Google Scholar 

  • Kitagawa, R. and Köster H.M. (1991) Genesis of the Tirschenreuth kaolin deposit in Germany compared with the Kohdachi kaolin deposit in Japan. Clay Minerals, 26, 61–79.

    Article  Google Scholar 

  • Konta, J. (1969) Comparison of the proofs of hydrothermal and supergene kaolinzation in two areas of Europe. In Proceedings of the International Clay Conference, Tokyo, Volume 1, L. Heller, ed., Israel University Press, 281–290.

    Google Scholar 

  • Konta, J. (1970) Discussion of J. Konta: Comparison of the proofs of hydrothermal and supergene kaolinization in two areas of Europe. In Proceedings of the International Conference, Tokyo, Volume 2, L. Heller, ed., Israel University Press, 91–93.

    Google Scholar 

  • Köster, H.M. (1969) Beitrag zu Geochemie der Kaoline. In Proceedings of the International Clay Conference, Tokyo, Volume I, L. Heller, ed., Israel University Press, 273–280.

    Google Scholar 

  • Lawrence, J.R. and Taylor, H.P. (1971) Deuterium and oxygen-18 correlation: Clay minerals and hydroxides in Quaternary soil compared to meteoric waters. Geochimica et Cosmochimica Acta, 35, 993–1003.

    Article  Google Scholar 

  • Lombardi, G. and Sheppard, S.M.F. (1977) Petrographic and isotopic studies of the altered acid volcanics of the Tolfa-Cerite area, Italy: The genesis of the clays. Clay Minerals, 12, 147–162.

    Article  Google Scholar 

  • MacKenzie, R.C. (1957) The Differential Thermal Analysis of Clays. Mineralogical Society, London, 456 pp.

    Google Scholar 

  • Manning, D.A.C. (1995) Introduction to Industrial Minerals. Chapman & Hall, London, 276 pp.

    Book  Google Scholar 

  • Marumo, K. (1989) Genesis of kaolin minerals and pyrophyllite in Kuroko deposits of Japan: Implications for the origin of the hydrothermal fluids from mineralogical and stable isotope data. Geochimica et Cosmochimica Acta, 53, 2915–2924.

    Article  Google Scholar 

  • Marumo, K., Matsuhisa, Y., and Nagasawa, K. (1982) Hydrogen and oxygen isotopic composition of kaolin minerals in Japan. Developments in Sedimentology, 35, 315–320.

    Google Scholar 

  • Meyer, C. and Hemley, J.J. (1967) Wall rock alteration. In Geochemistry of Hydrothermal Ore Deposits, H.L. Barnes, ed., Holt, Rinehart and Winston, New York, 166–235.

    Google Scholar 

  • Muñoz, J., Duhart, P., Crignola, P., Farmer, G.L., and Stern, C. (1997) The mid-Tertiary coastal magmatic belt, South-Central Chile. VIII Congreso Geologico Chileno Antofagasta Actas, 3, 1694–1698.

    Google Scholar 

  • Murray, H.H. (1988) Kaolin minerals: Their genesis and occurrences. In Hydrous phyllosilicates (Reviews in Mineralogy, Volume 19), S.W. Bailey, ed., Mineralogical Society of America, Washington, DC. 67–89.

    Chapter  Google Scholar 

  • Murray, H.H. and Keller, W.D. (1993) Kaolins, kaolins and kaolins. In Kaolin Genesis and Utilization, H.H. Murray, W. Bundy, and C. Harvey, eds., The Clay Mineral Society, Boulder, Colorado, 1–24.

    Google Scholar 

  • Nicolas, J. (1958) Sur la genèse des kaolins de Guiscriff (Finistère). Clay Minerals Bulletin, 3, 244–248.

    Article  Google Scholar 

  • Parrish, J., Ziegler, A., and Scotese, C. (1982) Rainfall patterns and the distribution of coals and evaporites in the Mesozoic and Cenozoic. Paleogeography Paleoclimatology and Paleoecology, 40, 67–101.

    Article  Google Scholar 

  • Reyes, A.G. (1991) Mineralogy, distribution and origin of acid alteration in Philippine geothermal systems. Geological Survey of Japan, Special Report: Chishitsu Chosasho Tokubetsu Hokoku, 277, 59–66.

    Google Scholar 

  • Romero, A.J.B., Domínguez, E., and Whewell, R. (1974) El área caolinera del Departamento de Gaimán, Provincia de Chubut. Fundación Bariloche, Centro Nacional Patagónico, 423–444.

    Google Scholar 

  • Rozanski, K., Araguás-Araguás, L., and Gonfiantini, R. (1993) Isotopic patterns in modern global precipitation. In Climate Change in Continental Isotopic Records. Geophysical Monograph 78, P.K. Swart, K.C. Lohmann, J. McKenzie, and S. Savin, eds., American Geophysical Union, Washington, DC., 1–36.

    Google Scholar 

  • Savin, S.M. and Epstein, S. (1970) The oxygen and hydrogen isotope geochemistry of clay minerals. Geochimica et Cosmochimica Acta, 34, 25–42.

    Article  Google Scholar 

  • Scotese, C., Gahagan, L., and Larson, R. (1988) Plate tectonic reconstruction of the Cretaceous and Cenozoic ocean basins. Tectonophysics, 155, 27–48.

    Article  Google Scholar 

  • Schira, W. (1991) Die Südliche Küstenkordillere Chiles. Dissertation, University of Heidelberg, Heidelberg, Germany, 238 pp.

    Google Scholar 

  • Schoen, R., White, D.E., and Hemley, J.J. (1974) Argilliza-tion by descending acid at Steamboat Springs, Nevada. Clays and Clay Minerals, 22, 1–22.

    Article  Google Scholar 

  • Sheppard, S.M.F. (1977) The Cornubian batholith, SW England: D/H and 18O/16O studies of kaolinite and other alteration minerals. Journal of the Geological Society (London), 133, 573–591.

    Article  Google Scholar 

  • Sheppard, S.M.F. and Gilg, H.A. (1996) Stable isotope geochemistry of clay minerals. Clay Minerals, 31, 1–24.

    Article  Google Scholar 

  • Sheppard, S.M.F. and Gustafson, L.B. (1976) Oxygen and hydrogen isotopes in the porphyry copper deposit at El Salvador, Chile. Economic Geology, 71, 1549–1559.

    Article  Google Scholar 

  • Sheppard, S.M.E., Nielsen, R.L., and Taylor, H.P. (1969) Oxygen and hydrogen isotope ratios of clay minerals from porphyry copper deposits. Economic Geology, 64, 755–777.

    Article  Google Scholar 

  • Walker, G.F. (1970) Discussion of J. Konta: Comparison of the proofs of hydrothermal and supergene kaolinization in two areas of Europe. In Proceedings of the International Clay Conference, Tokyo, Volume 2, L. Heller, ed., Israel University Press, 91–93.

    Google Scholar 

  • Weischet, W. (1970) Chile, Seine Landeskundliche Individulität und Struktur. Wissenschaftliche Buchgesellschaft, Darmstadt, 268–365.

    Google Scholar 

  • Yapp, C.J. (1987) Oxygen and hydrogen isotope variations among goethites (α-FeOOH) and determination of paleo-temperatures. Geochimica et Cosmochimica Acta, 51, 355–364.

    Article  Google Scholar 

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Authors and Affiliations

  1. Lehrstuhl für Angewandte Mineralogie und Geochemie, Technische Universität München, Lichtenbergstr. 4, 85747, Garching, Germany

    H. A. Gilg

  2. Institut für Allgemeine und Angewandte Geologie, Ludwig-Maximilians-Universität München, Luisenstr. 37, 80333, München, Germany

    S. Hülmeyer & H. Miller

  3. Laboratoire de Science de la Terre and CNRS-UMR 5570, Ecole Normale Supérieure de Lyon, 46 Allée d’Italie, 69364, Lyon, France

    S. M. F. Sheppard

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  1. H. A. Gilg
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  2. S. Hülmeyer
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  4. S. M. F. Sheppard
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Gilg, H.A., Hülmeyer, S., Miller, H. et al. Supergene Origin of the Lastarria Kaolin Deposit, South-Central Chile, and Paleoclimatic Implications. Clays Clay Miner. 47, 201–211 (1999). https://doi.org/10.1346/CCMN.1999.0470210

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  • DOI: https://doi.org/10.1346/CCMN.1999.0470210

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