Hostname: page-component-76fb5796d-vfjqv Total loading time: 0 Render date: 2024-04-26T06:01:16.325Z Has data issue: false hasContentIssue false
  • English
  • Français

Chlorites and chloritic mixed-layer minerals in profiles on ultrabasic rocks from Moyango (Ivory Coast) and Angiquinho (Brazil)

Published online by Cambridge University Press:  09 July 2018

Y. Noack  and
F. Colin
Y. Noack
Affiliation:
Laboratoire de Pétrologie de la Surface et U.A. 721, CNRS, Université de Poitiers, 40 Avenue du Recteur Pineau, 86022 Poitiers Cedex
F. Colin
Affiliation:
ORSTOM, 24 Rue Bayard, 75008 Paris Cedex, France
Get access Rights & Permissions [Opens in a new window]

Abstract

Different types of chlorite and related mixed-layer minerals have been found in profiles developed on ultrabasic rocks of Ivory Coast and Brazil. Normal chlorites, with low K and Ni contents, are of hydrothermal origin and are situated at the bottom of the alteration profile. At the top of the profile the mixed-layer minerals are Ni-chlorite/vermiculite, which formed under weathering conditions, or K-chlorite/vermiculite, resulting from the alteration of mica. The Ni-content of the chlorite/vermiculite can reach 10% NiO.

Type
Research Article
Information
Clay Minerals , Volume 21 , Issue 2 , June 1986 , pp. 171 - 182
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1986

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

Bailey, S.W. (1980) Summary of recommendations of AIPEA nomenclature committee on clay minerals. Am. Miner. 65, 1–7.Google Scholar
Bailey, S.W. & Riley, J.F. (1977) An unusual chlorite from Western Australia. Mineral Mag. 41, 541–544.CrossRefGoogle Scholar
Brindley, G.W. & De Souza, J.V. (1975a) A golden colored, ferrinickel chloritic mineral from Morro do Niquel, Minas Gerais, Brazil. Clays Clay Miner. 23, 11–15.CrossRefGoogle Scholar
Brindley, G.W. & De Souza, J.V. (1975b) Nickel containing montmorillonites and chlorites from Brazil, with remarks on schuchardite. Mineral. Mag. 40, 141–152.CrossRefGoogle Scholar
Casanova, R. & Knopf, D. (1969) Presence de chlorite gonflante dans une roche kimberlitique altérée de Côte d'Ivoire. Bull. Soc. fr. Mineral. Cristallogr. 92, 503–505.Google Scholar
Colin, F. (1984) Etude pétrologique des altérations des pyroxénites du gisement nickélifère de Niquelandia (Brésil). Thèse 3e cycle, Paris VII, 136 pp.Google Scholar
De Waal, S.A. (1970) Nickel minerals from Barberton, South Africa: II Nimite, a nickel-rich chlorite. Am. Miner. 55, 18–29.Google Scholar
Dubinska, E. (1984). Interstratified minerals with chlorite layers from Szklary near Zabkowice Slaskie (Lower Silesia). Arch. Mineral. XXXIX, 2, 5–24.Google Scholar
Ducloux, J., Meunier, A. & Velde, B. (1976) Smectite, chlorite and a regular interlayered chlorite-vermiculite in soils developed on a small serpentinite body, Massif Central, France. Clay Miner. 1, 121–135.CrossRefGoogle Scholar
Edel'Shteyn, I.I. & Zuzuk, F.V. (1974) On the forms of occurrence of nickel in chlorites. Geochem. Int. 305–313.Google Scholar
Esson, J. & Carlos, L. (1978) The occurrence, mineralogy and chemistry of some garnierites from Brazil. Bull. Bur. Rech. géol. min., series II, 3, 263–274.Google Scholar
Foster, M.D. (1962) Interpretation of the composition and a classification of the chlorites. U.S. Geol. Surv. Prof. Pap. 414-A, 33 pp.Google Scholar
Hayes, J.B. (1970) Polytypism of chlorite in sedimentary rocks. Clays Clay Miner. 18, 285–306.CrossRefGoogle Scholar
Herbillon, A.J. & Makumbi, M.N. (1975) Weathering of chlorite in a soil derived from a chloritoschist under humid tropical conditions. Geoderma 13, 89–104.CrossRefGoogle Scholar
Mathez, G. (1976) Prospection des indices de nickel de Moyango (Lefoi) et de Foungouesso (extensions E et NE). Rept. SODEMI no 361, Abidjan, 55 pp.Google Scholar
Mejsner, J. (1978) Alteration products from chlorite: I—the Taro valley mineral series (Italy). Arch. Miner. XXXIV, 5–6.Google Scholar
Montoya, J.W. & Baur, G.S. (1963) Nickeliferous serpentines, chlorites and related minerals found in two lateritic ores. Am. Miner. 48, 1227–1238.Google Scholar
Nahon, D. (1978) L'altération des roches ultrabasiques de la région de Biankouma (C.I.). II. Le massif de Moyango. Rapport Sci. de la Terre, Univ. Abidjan 22, 16 pp.Google Scholar
Nahon, D. (1979) Cuirasses siliceuses ou silcrètes nickélifères dans les profils d'altération de roches ultrabasiques de Côte d'Ivoire. Rô1e des épigénies. Sci. Geol., Bull. 32, 189–197.CrossRefGoogle Scholar
Nahon, D., Paquet, H. & Delvigne, J. (1982) Lateritic weathering of ultramatic rocks and the concentration of nickel in the Western Ivory Coast. Econ. Geol. 77, 1159–1175.CrossRefGoogle Scholar
Nakamuta, Y. (1981) A regularly interstratified chlorite/vermiculite in a talc-chlorite vein. Mem. Fac. Sci., Kiyushu Univ. D XXIV, 253–279.Google Scholar
Nishiyama, T., Oinuma, K. & Sato, M. (1978) An interstratified chlorite-vermiculite in weathered red shale near Toyoma, Japan. Proc. 6th Int. Clay Conf. Oxford, 85–94.Google Scholar
Ostrowicki, B. (1965) Mineraly niklu strefy wie tzrenia serpentynitow w Szklarach. Polska Akad. Nauk, Prace Mineral I, 7–92.Google Scholar
Pion, J.C. (1979) Altération de massifs cristaUins basiques en zone tropicale sèche. Etude de quelques toposéquences en Haute-Volta. Sci. Géol., Mém. 57, 220 pp.Google Scholar
Schrauf, A. (1882) Beitrage zur Kenntniss des Associations-kreises der Magnesiasilicate. Zeit. Krystal. Mineral 6, 321–388.Google Scholar
Senkayi, A.L., Dixon, J.B. & Hossner, L.R. (1981) Transformation of chlorite to smectite through regularly interstratified intermediates. Soil Sci. Am. J. 45, 650–656.CrossRefGoogle Scholar
Starkl, G. (1883) Ueber Schuchardtit. Zeit. Krystal Mineral. 8, 239–240.Google Scholar
Thorez, J. (1975) Phyllosilicates and Clay Minerals. A Laboratory Handbook for their X-ray Diffraction Analysis. Editions LELOTTE, 579 pp.Google Scholar
Trescases, J.J. (1975) L'évolution géochimique supergène des roches ultrabasiques en zone tropicale. Formation des gisements nickelifères de Nouvelle-Calédonie. Mém. ORSTOM, Paris 78, 249 pp.Google Scholar
Velde, B. (1977) Clays and Clay Minerals in natural and Synthetic Systems. Elsevier, Amsterdam, 218 pp.Google Scholar
Veniale, F. & Van Der Marel, H.W. (1963) An interstratified saponite-swelling chlorite mineral as a weathering product of lizardite rock from St Margherita Staffora (Pavia Province), Italy. Beitr. Mineral. Petrogr. 9, 198–245.Google Scholar
Veniale, F. & Van Der Marel, H.W. (1968) A regular talc saponite mixed-layer mineral from Ferriere, Nure Valley (Pincenza Province, Italy). Contrib. Miner. Petro. 17, 234–254.CrossRefGoogle Scholar
Wackermann, J.M. (1975) L'altération des massifs cristallins basiques en zone tropicale semi-humide. Etude minéralogique et géochimique des arènes du Sénégal Oriental. Conséquences pour la cartographie et la prospection. Thèse Science, Strasbourg, 373 pp.Google Scholar
Wilshire, H.C. (1958) Alteration of olivine and orthopyroxenes in basic lavas and shallow intrusions. Am. Miner. 43, 120–147.Google Scholar
Wiewiora, A. (1978) Ni-containing mixed-layer silicates from Szklary, Lower Silesia, Poland. Bur. Rech. géol. min., serie II 3, 247–261.Google Scholar