D. Aberdam, , a Software Package for EXAFS Data Extraction and Modelling, Journal of Synchrotron Radiation, vol.5, issue.5, pp.1287-1297, 1998.
DOI : 10.1107/S0909049598004142

J. Ahman, G. Svensson, and A. J. , A Reinvestigation of ??-Gallium Oxide, Acta Crystallographica Section C Crystal Structure Communications, vol.52, issue.6, pp.1336-1338, 1996.
DOI : 10.1107/S0108270195016404

J. W. Akitt, N. N. Greenwood, B. L. Khandelwal, and L. G. , 27 Al nuclear magnetic resonance studies of the hydrolysis and polymerisation of the hexa-aquo-aluminum(III) cation, J. Chem. Soc. Dalton Trans, pp.604-610, 1972.

J. W. Akitt and J. M. Elders, ChemInform Abstract: Multinuclear Magnetic Resonance Studies of the Hydrolysis of Aluminum(III). Part 8. Base Hydrolysis Monitored at Very High Magnetic Field., ChemInform, vol.19, issue.34, pp.1347-1355, 1988.
DOI : 10.1002/chin.198834001

A. L. Ankudinov and J. J. Rehr, Relativistic calculations of spin-dependent x-ray-absorption spectra, Physical Review B, vol.56, issue.4, pp.1712-1715, 1997.
DOI : 10.1103/PhysRevB.56.R1712

C. F. Baes, . Jr, and R. E. Mesmer, The Hydrolysis of Cations, 1976.

P. Bénézeth, S. Castet, J. Dandurand, R. Gout, and J. Schott, Experimental study of aluminum-acetate complexing between 60 and 200??c, Geochimica et Cosmochimica Acta, vol.58, issue.21, pp.4561-4571, 1994.
DOI : 10.1016/0016-7037(94)90191-0

P. Bénézeth, I. Diakonov, G. S. Pokrovski, J. Dandurand, J. Schott et al., Gallium speciation in aqueous solution. Experimental study and modelling: Part 2. Solubility of ??-GaOOH in acidic solutions from 150 to 250??C and hydrolysis constants of gallium (III) to 300??C, Geochimica et Cosmochimica Acta, vol.61, issue.7, pp.1345-1357, 1997.
DOI : 10.1016/S0016-7037(97)00012-4

P. Behrens, H. Kosslick, V. A. Tuan, M. Fröba, and F. Niessendorfer, X-ray absorption spectroscopic study on the structure and crystallization of Ga-containing MFI-type zeolites, Microporous Mater, pp.433-441, 1995.
DOI : 10.1016/0927-6513(94)00054-Y

J. D. Birchall, C. Exley, J. S. Chappell, and M. J. Phillips, Acute toxicity of aluminium to fish eliminated in silicon-rich acid waters, Nature, vol.121, issue.6211, pp.146-148, 1989.
DOI : 10.1038/239333a0

D. Bonnin, G. Calas, H. Suquet, and H. Pezerat, Site occupancy of Fe 3 in Galfield nontronite: a spectroscopic study, Phys. Chem. Miner, vol.12, pp.55-64, 1985.

J. Y. Bottero, A. Manceau, F. Villieras, and D. Tchoubar, Structure and mechanisms of formation of iron oxide hydroxide (chloride) polymers, Langmuir, vol.10, issue.1, pp.316-319, 1994.
DOI : 10.1021/la00013a046

S. M. Bradley, R. A. Kydd, and R. Yamdagni, Detection of a new polymeric species formed through the hydrolysis of gallium(III) salt solutions, Journal of the Chemical Society, Dalton Transactions, issue.2, pp.413-417, 1990.
DOI : 10.1039/dt9900000413

S. M. Bradley, R. A. Kydd, and Y. R. , Study of the hydrolysis of combined Al 3 and Ga 3 aqueous solutions: Formation of an extremely stable GaO 4, Al, vol.12, issue.2, pp.24-36, 1990.

B. A. Browne and C. T. Driscoll, Soluble Aluminum Silicates: Stoichiometry, Stability, and Implications for Environmental Geochemistry, Science, vol.256, issue.5064, pp.1667-1670, 1992.
DOI : 10.1126/science.256.5064.1667

J. M. Combes, A. Manceau, G. Calas, and J. Y. Bottero, Formation of ferric oxides from aqueous solutions: A polyhedral approach by X-ray absorption spectroscdpy: I. Hydrolysis and formation of ferric gels, Geochimica et Cosmochimica Acta, vol.53, issue.3, pp.583-594, 1989.
DOI : 10.1016/0016-7037(89)90001-X

E. D. Crosier, J. J. Rehr, and R. Ingalls, Amorphous and liquid systems, X-ray Absorption. Principles, Applications, Techniques of EXAFS, pp.373-442, 1988.

A. Decarreau, D. Bonnin, D. Badaut-trauth, R. Couty, and K. P. , Synthesis and Crystallogenesis of Ferric Smectite by Evolution of Si-Fe Coprecipitates in Oxidizing Conditions, Clay Minerals, vol.22, issue.2, pp.207-223, 1987.
DOI : 10.1180/claymin.1987.022.2.09

I. Diakonov, G. S. Pokrovski, P. Benezeth, J. Schott, J. Dandurand et al., Gallium speciation in aqueous solution. Experimental study and modelling. Part I, Thermodynamic properties of Ga(OH) 4, 1997.

E. Doelsch, J. Rose, A. Masion, J. Y. Bottero, D. Nahon et al., Ligands. 1. An Fe K-Edge EXAFS Study, Langmuir, vol.16, issue.10, pp.4726-4731, 2000.
DOI : 10.1021/la991378h

E. Dooryhee, G. N. Greaves, A. T. Steel, R. P. Townsend, S. W. Carr et al., Structural studies of high-area zeolitic adsorbents and catalysts by a combination of high-resolution X-ray powder diffraction and X-ray absorption spectroscopy, Faraday Discussions of the Chemical Society, vol.89, pp.119-136, 1990.
DOI : 10.1039/dc9908900119

C. Exley and J. D. Birchall, Hydroxyaluminosilicate formation in solutions of low aluminium concentration, Polyhedron, vol.11, 1901.

C. Exley and J. D. Birchall, A mechanism of hydroxyaluminosilicate formation, Polyhedron, vol.12, issue.9, pp.1007-1017, 1993.
DOI : 10.1016/S0277-5387(00)87177-6

F. Farges, Does Zr???F ???complexation??? occur in magmas?, Chemical Geology, vol.127, issue.4, pp.253-268, 1996.
DOI : 10.1016/0009-2541(95)00132-8

F. Farges, G. E. Brown, and R. J. Jr, Coordination chemistry of Ti(IV) in silicate glasses and melts: I. XAFS study of titanium coordination in oxide model compounds, Geochimica et Cosmochimica Acta, vol.60, issue.16, pp.3023-3038, 1996.
DOI : 10.1016/0016-7037(96)00144-5

F. Farges, G. E. Brown, . Jr, A. Navrotsky, H. Gan et al., Coordination chemistry of Ti(IV) in silicate glasses and melts: III. Glasses and melts from ambient to high temperatures, Geochimica et Cosmochimica Acta, vol.60, issue.16, pp.3055-3065, 1996.
DOI : 10.1016/0016-7037(96)00146-9

V. C. Farmer, A. R. Fraser, and T. J. , Synthesis of imologite: a tubular aluminosilicate polymer, J. Chem. Soc. Chem. Comm, pp.462-463, 1977.

V. C. Farmer, A. R. Fraser, and T. J. , Characterization of the chemical structures of natural and synthetic aluminosilicate gels and sols by infrared spectroscopy, Geochimica et Cosmochimica Acta, vol.43, issue.9, pp.1417-1420, 1979.
DOI : 10.1016/0016-7037(79)90135-2

V. C. Farmer and D. G. Lumsdon, An assessment of complex formation between aluminium and silicic acid in acidic solutions, Geochimica et Cosmochimica Acta, vol.58, issue.16, pp.3331-3334, 1994.
DOI : 10.1016/0016-7037(94)90088-4

B. C. Faust, W. B. Labiosa, K. H. Dai, J. S. Macfall, B. A. Browne et al., Speciation of aqueous mononuclear Al(III)-hydroxo and other Al(III) complexes at concentrations of geochemical relevance by aluminum-27 nuclear magnetic resonance spectroscopy, Geochimica et Cosmochimica Acta, vol.59, issue.13, pp.2651-5661, 1995.
DOI : 10.1016/0016-7037(95)00162-S

S. E. Fendorf, G. M. Lamble, M. G. Stapleton, M. J. Kelley, and D. L. Sparks, Mechanisms of chromium(III) sorption on silica. 1. Chromium(III) surface structure derived by extended x-ray absorption fine structure spectroscopy, Environmental Science & Technology, vol.28, issue.2, pp.284-289, 1994.
DOI : 10.1021/es00051a015

R. Fricke, H. Kosslick, G. Lischke, and M. Richter, Incorporation of Gallium into Zeolites:?? Syntheses, Properties and Catalytic Application, Chemical Reviews, vol.100, issue.6, pp.2303-2405, 2000.
DOI : 10.1021/cr9411637

R. Gout, G. S. Pokrovski, J. Schott, and A. Zwick, A Raman spectroscopy study of aluminum-silica complexing in aqueous solution, Journal of Solution Chemistry, vol.28, issue.1, pp.73-82, 1999.
DOI : 10.1023/A:1021703408311

R. Gout, G. S. Pokrovski, J. Schott, and A. Zwick, Raman spectroscopic study of aluminum silicate complexing at 20 °Ci n basic solutions, Journal of Solution Chemistry, vol.29, issue.12, pp.1173-1186, 2000.
DOI : 10.1023/A:1026428027101

J. Guth, P. Caullet, and R. Wey, Contribution a `l 'e ´tude du mécanisme de formation des zéolites. I. Mise en e ´vidence de complexes aluminosilicates solubles par acidimétrie, Bull. Soc. Chim. Fr, pp.1758-1762, 1974.

J. Guth, P. Caullet, and R. Wey, Contribution a `l 'e ´tude du mécanisme de formation des zéolites. II. Mise en e ´vidence de complexes aluminosilicates solubles par conductométrie, Bull. Soc. Chim. Fr, pp.2363-2366, 1980.

J. Guth, P. Caullet, P. Jacques, and R. Wey, Contribution a ` l'e ´tude du mécanisme de formation des zéolites. IV. -Mise en e ´vidence de complexes aluminosilicates dans des solutions aqueuses basiques contenant des cations sodium par spectroscopie Raman- Laser, Bull. Soc. Chim. Fr, pp.121-126, 1980.

P. L. Higby, J. E. Shelby, J. C. Phillips, and L. A. , EXAFS study of alkali galliosilicate glasses, Journal of Non-Crystalline Solids, vol.105, issue.1-2, pp.139-148, 1988.
DOI : 10.1016/0022-3093(88)90348-1

G. Johanson, On the crystal structure of the basic aluminum sulfate 13Al 2 O 3 6SO 3 xH 2 O, Ark. Kemi, vol.20, pp.321-342, 1962.

G. Johanson, The crystal structures of, OH) 2 (H 2 O) 8 ], 1962.

S. D. Kinrade and T. W. Swaddle, Direct detection of aluminosilicate species in aqueous solution by silicon-29 and aluminum-27 NMR spectroscopy, Inorganic Chemistry, vol.28, issue.10, pp.1952-1954, 1989.
DOI : 10.1021/ic00309a036

K. O. Konhauser and F. G. Ferris, Diversity of iron and silica precipitation by microbial mats in hydrothermal waters, Iceland: Implications for Precambrian iron formations, Geology, vol.24, issue.4, pp.323-326, 1996.
DOI : 10.1130/0091-7613(1996)024<0323:DOIASP>2.3.CO;2

F. Koroleff, Determination of silicon, Methods of Seawater Analysis, 1976.

P. Lindqvist-reis, A. Munoz-paez, S. Diaz-moreno, S. Pattanail, I. Parsson et al., The Structure of the Hydrated Gallium(III), Indium(III), and Chromium(III) Ions in Aqueous Solution. A Large Angle X-ray Scattering and EXAFS Study, Inorganic Chemistry, vol.37, issue.26, pp.6675-6683, 1998.
DOI : 10.1021/ic980750y

A. Manceau and L. Charlet, The Mechanism of Selenate Adsorption on Goethite and Hydrous Ferric Oxide, Journal of Colloid and Interface Science, vol.168, issue.1, pp.87-93, 1994.
DOI : 10.1006/jcis.1994.1396

A. Manceau, The mechanism of anion adsorption on iron oxides: Evidence for the bonding of arsenate tetrahedra on free Fe(O, OH)6 edges, Geochimica et Cosmochimica Acta, vol.59, issue.17, pp.3647-3653, 1995.
DOI : 10.1016/0016-7037(95)00275-5

T. D. Mayer and W. M. Jarrell, Formation and stability of iron(II) oxidation products under natural concentrations of dissolved silica, Water Research, vol.30, issue.5, pp.1208-1214, 1996.
DOI : 10.1016/0043-1354(95)00265-0

L. J. Michot, E. Montargès-pelletier, B. S. Lartiges, J. Espinose-de-la-caillerie, and V. Briois, Keggin Ion:?? A Combined EXAFS and NMR Study, Journal of the American Chemical Society, vol.122, issue.25, pp.6048-6056, 2000.
DOI : 10.1021/ja9941429

R. F. Mortlock, A. T. Bell, and R. C. , Silicon-29 and gallium-71 NMR investigations of alkylammonium gallosilicate solutions, The Journal of Physical Chemistry, vol.96, issue.7, pp.2968-2975, 1992.
DOI : 10.1021/j100186a038

T. M. Nenoff, W. T. Harrison, T. E. Gier, N. L. Keder, C. M. Zaremba et al., Structural and Chemical Investigations of Na3(ABO4)3.cntdot.4H2O-Type Sodalite Phases, Inorganic Chemistry, vol.33, issue.11, pp.2472-2480, 1994.
DOI : 10.1021/ic00089a026

K. Okabe, N. Matsubayashi, K. Sayama, H. Arakawa, and A. Nishijima, EXAFS Investigation of Pentasil-Structured Gallium-Containing Metallosilicates, Bulletin of the Chemical Society of Japan, vol.64, issue.8, pp.2602-2604, 1991.
DOI : 10.1246/bcsj.64.2602

O. ¨-hman, L. Edlund, and U. , Aluminum-27 NMR of solutions, pp.742-751, 1996.

L. L. Olson, O. Melia, and C. R. , The interactions of Fe(III) with Si(OH)4, Journal of Inorganic and Nuclear Chemistry, vol.35, issue.6, pp.1977-1985, 1973.
DOI : 10.1016/0022-1902(73)80136-8

G. S. Pokrovski, Etude expérimentale du comportement du germanium, du silicium et de l'arsenic et de la complexation de l'aluminium avec la silice dans les solutions naturelles, Thèse de Doctorat de l'Université Paul-Sabatier, 1996.

G. S. Pokrovski and J. Schott, Experimental study of the complexation of silicon and germanium with aqueous organic species: implications for germanium and silicon transport and Ge/Si ratio in natural waters, Geochimica et Cosmochimica Acta, vol.62, issue.21-22, pp.3413-3428, 1998.
DOI : 10.1016/S0016-7037(98)00249-X

G. S. Pokrovski, F. Martin, J. Hazemann, and J. Schott, An X-ray absorption fine structure spectroscopy study of germanium-organic ligand complexes in aqueous solution, Chemical Geology, vol.163, issue.1-4, pp.151-165, 2000.
DOI : 10.1016/S0009-2541(99)00102-3
URL : https://hal.archives-ouvertes.fr/hal-00115161

G. S. Pokrovski, J. Schott, J. Harrichoury, and S. A. , The stability of aluminum silicate complexes in acidic solutions from 25 to 150??C, Geochimica et Cosmochimica Acta, vol.60, issue.14, pp.2495-2501, 1996.
DOI : 10.1016/0016-7037(96)00123-8

G. S. Pokrovski, J. Schott, J. Hazemann, F. Martin, F. Farges et al., An X-ray absorption fine structure spectroscopy study of iron(III)-silica and gallium-silica complexes in aqueous solution: Implications for the hydrolysis and the formation of iron and aluminum oxy-hydroxides and silicates. European Union of Geosciences-XI, Journal of Conference Abstracts on CD-Rom, 2001.

G. S. Pokrovski, J. Schott, S. Salvi, R. Gout, and K. J. , Structure and stability of alumino-silicate complexes in neutral to basic solutions. Experimental study and molecular orbital calculations, pp.1194-1196, 1998.

W. H. Press, B. P. Flannery, S. A. Teukolsky, and W. T. Vetterling, Numerical Recipes-The Art of Scientific Computing, 1986.

M. F. Pye, J. J. Birtill, and P. G. Dickens, ??-Gallium oxide deuteriohydroxide: a powder neutron diffraction investigation, Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry, vol.33, issue.10, pp.3224-3226, 1977.
DOI : 10.1107/S0567740877010620

S. Salvi, G. S. Pokrovski, and J. Schott, Experimental investigation of aluminum-silica aqueous complexing at 300??C, Chemical Geology, vol.151, issue.1-4, pp.51-67, 1998.
DOI : 10.1016/S0009-2541(98)00070-9

P. H. Santschi and P. W. Schindler, Complex formation in the ternary systems Ca?H 4 SiO 4 ?H 2 O and Mg?H 4 SiO 4 ?H 2 O, J. Chem. Soc. Dalton Trans, pp.181-184, 1974.

I. Satoh and G. R. Choppin, Interaction of Uranyl(VI) with Silicic Acid, Radiochimica Acta, vol.56, issue.2, pp.85-87, 1992.
DOI : 10.1524/ract.1992.56.2.85

L. G. Sillen and A. E. Martell, Stability Constants of Metal-Ion Complexes: Special Publication No. 17, 1976.

U. Schwertmann and H. Thalmann, The Influence of [Fe(II)], [Si], and pH on the Formation of Lepidocrocite and Ferrihydrite During Oxidation of Aqueous FeCl2 Solutions, Clay Minerals, vol.11, issue.3, pp.189-200, 1976.
DOI : 10.1180/claymin.1976.011.3.02

Y. Soldo, J. L. Hazemann, D. Aberdam, M. Inui, K. Tamura et al., Semiconductor-to-metal transition in fluid selenium at high pressure and high temperature: An investigation using x-ray-absorption spectroscopy, Physical Review B, vol.57, issue.1, pp.258-268, 1998.
DOI : 10.1103/PhysRevB.57.258

E. A. Stern, Number of relevant independent points in x-ray-absorption fine-structure spectra, Physical Review B, vol.48, issue.13, pp.9825-9827, 1993.
DOI : 10.1103/PhysRevB.48.9825

W. Stumm, Chemistry of the Solid-Water Interface, 1992.

B. K. Teo, EXAFS: Basic Principles and Data Analysis, Inorganic Chemistry Concepts, vol.9, 1986.
DOI : 10.1007/978-3-642-50031-2

F. Thomas, A. Masion, J. Y. Bottero, J. Rouiller, F. Montigny et al., Aluminum(III) speciation with hydroxy carboxylic acids. Aluminum-27 NMR study, Environmental Science & Technology, vol.27, issue.12, pp.2511-2516, 1993.
DOI : 10.1021/es00048a031

R. K. Vempati and R. H. Loeppert, Influence of Structural and Adsorbed Si on the Transformation of Synthetic Ferrihydrite1, Clays and Clay Minerals, vol.37, issue.3, pp.273-279, 1989.
DOI : 10.1346/CCMN.1989.0370312

J. Viers, B. Dupré, M. Polve, J. Schott, J. Dandurand et al., Chemical weathering in the drainage basin of a tropical watershed (Nsimi-Zoetele site, Cameroon) : comparison between organic-poor and organic-rich waters, Chemical Geology, vol.140, issue.3-4, pp.181-206, 1997.
DOI : 10.1016/S0009-2541(97)00048-X

S. Wada and K. Wada, REACTIONS BETWEEN ALUMINATE IONS AND ORTHOSILICIC ACID IN DILUTE, ALKALINE TO NEUTRAL SOLUTIONS, Soil Science, vol.132, issue.4, pp.267-273, 1981.
DOI : 10.1097/00010694-198110000-00003

G. A. Waychunas, B. A. Rea, C. C. Fuller, and D. J. , Surface chemistry of ferrihydrite: Part 1. EXAFS studies of the geometry of coprecipitated and adsorbed arsenate, Geochimica et Cosmochimica Acta, vol.57, issue.10, pp.2251-2269, 1993.
DOI : 10.1016/0016-7037(93)90567-G

W. Weber and W. Stumm, Formation of a silicato-iron(III) complex in dilute aqueous solution, Journal of Inorganic and Nuclear Chemistry, vol.27, issue.1, pp.237-239, 1965.
DOI : 10.1016/0022-1902(65)80215-9

D. J. Wesolowski, D. A. Palmer, and M. R. , Measurements and control of pH in hydrothermal solutions, pp.51-55, 1995.

G. V. Winters and D. E. Buckley, The influence of dissolved FeSi, p.8, 1986.

M. Winterer, XAFS - A Data Analysis Program for Materials Science, Le Journal de Physique IV, vol.7, issue.C2, pp.2-243, 1997.
DOI : 10.1051/jp4/1997182

S. Xu and J. B. Harsh, Labile and Nonlabile Aqueous Silica in Acid Solutions: Relation to the Colloidal Fraction, Soil Science Society of America Journal, vol.57, issue.5, pp.1271-1277, 1993.
DOI : 10.2136/sssaj1993.03615995005700050018x

S. Y. Zabinky, J. J. Rehr, A. L. Ankudinov, R. S. Albers, and M. J. Eller, Multiple-scattering calculations of x-ray-absorption spectra, Physical Review B, vol.52, issue.4, pp.2995-3009, 1995.
DOI : 10.1103/PhysRevB.52.2995