 | | Book | | ores were exploited in the Venn-Stavelot Massif (Belgium). There are two varieties and their formations...these minerais are among the most interesting in Belgium. 3 Le manganèse en Ardenne Table des matières...ont effectivement permis de trouver des blocs de quartz blanc avec des encroûtements bruns à noirs qui...de A f JLFigures N 1 et N 2 - Cryptomélane sur quartz, Villance. Introduction la "Basse-Lienne" et...partie sud du Massif de Stavelot aux environs de Vielsalm-Bihain-Lierneux d'une part et aux environs de |  | | Report (chapter) | | 2015 Late Frasnian phillipsastreid biostromes in Belgium EDOUARD POTY l & EMMANUEL CHEVALIER 2 ~Palkontologie...de Likge, Bdt. B18, Sart Tilman, B-4000 Likge, Belgium (e-mail: e.poty@ulg.ac.be) 2Carmeuse s.a., Rue...Rue du Chgtteau, 13A, B-5300 Seilles, Belgium (e-mail: emmanuel, chevalier@carmeuse, be) Abstract: In the...scleractinians, and to live in turbulent habitats. In Belgium argillaceous sedimentation prevented the development...often rich coral and stromatoporoid faunas. In Belgium the first Frasnian ecological crisis occurred during |  | | Journal (article/letter/editorial) | | (CAS) system Grant S. Henderson a,⁎, Daniel R. Neuville b, Laurent Cormier c a Department of Geology...excellent optical and mechanical properties (cf., Neuville et al., 2006 and references therein). Furthermore...properties such as the glass transition temperature (Neuville et al., 2004a,b) are markedly changed with the...2006), Ca and Al K-edge XANES (Wu et al, 1997; Neuville et al., 2004a,b, 2008), NMR (Merzbacher et al...Stebbins et al., 2000; Allwardt et al., 2003; Neuville et al., 2004a,b, 2006, 2007; Iuga et al., 2005) |  | | Book | | organismes bio-constructeurs dans les niveaux basals de Neuville. Les schistes noirs de Matagne représentent à...shales calcareux et calcaires argileux nommés Neuville, des shales bruns avec des nodules calcareux nommés...et de Lion) passent à celles de la Formation de Neuville, qui sont à leur tour surmontées de la Formation...karstiques près du contact avec la Formation de Neuville. Ils contiennent des inclusions de sulfures de...Formation de Neuville et dans les schistes noirs de la Formation de Matagne. Du quartz [SiO2] a été ponctuellement |  | Moulton, Benjamin J.A., Henderson, Grant S., Sonneville, Camille, O'Shaughnessy, Cedrick, Zuin, Lucia, Regier, Tom, de Ligny, Dominique (2016) The structure of haplobasaltic glasses investigated using X-ray absorption near edge structure (XANES) spectroscopy at the Si, Al, Mg, and O K -edges and Ca, Si, and Al L 2,3 -edges. Chemical Geology, 420. 213-230 doi:10.1016/j.chemgeo.2015.11.016 | Journal (article/letter/editorial) | | Taniguchi and Murase, 1987; Navrotsky et al., 1990; Neuville and Richet, 1991; Secco et al., 1991; Knoche et...multi-spectroscopic approaches have become the standard (e.g. Neuville et al., 2004b), each technique providing important...SiO2 polymorph standards (cristobalite, coesite, α-quartz), diopside, anorthite and/or spinel standards depending...1998; Neuville et al., 2008b, 2009). The peak assignments of (Ildefonse et al., 1998) and (Neuville et al...Di Di100 Di80 Di60 Di40 Di20 An100 Vesuvius An Quartz SiO 2 Glass 1.637a 1.66a,b 1.58 1.59 1.63 1.60 |  | | Journal (article/letter/editorial) | | vulcanicity must be of late Valentian age (22, p. 84). Belgium. Sambre-Meuse District.—In the Ardennes the Gedinnian...At La Neuville-sous-Huy the Upper Valentian slates contain thin flows of keratophyre and quartz-keratophyre...to the north around Clevedon (23), and again in Belgium along the southern border of the Brabant Massif...intersection with the ancient Malvern axis. In Belgium and Bohemia, however, the volcanic series seem...Pembrokeshire (3, pp. 262-3). The keratophyres of La Neuville-sous-Huy were extruded farther south of the Valentian |  | | Journal (article/letter/editorial) | | Grondin-es, 19. StC;aimir. 20. Pont St-Alban, 21. Neuville, 22. Ancicnm Lorctte. 23. CMtcau Richer, 24. Petites...Joliette duma. coquinas are also common and a high quartz sand admixture, including frosted grains, is typical...where circulation may have been much reduced. High quartz admixtures throughout show the continued influence...especially around Trois Rivibres, and by local quartz sand dominated sequences (Roliff 1967). It is clear...reaches a thickness of 10m and consists of coarse quartz sandstones which are pebbly and cross-stratified |  | | Journal (article/letter/editorial) | | Pascal Richet a,*, Atsusi Nidaira a, Daniel R. Neuville b, Tooru Atake a a Materials and Structures Laboratory...range of glass composition, and thus of structure (Neuville et al., 2004a, 2006). Besides, investigation of...superliquidus temperatures (Kanehashi and Stebbins, 2007; Neuville et al., 2008; Stebbins et al., 2008). But the...than predicted by additivity from the data for quartz and nepheline (NaAlSiO4). In addition, the heat...paper we take advantage of known Al speciation (Neuville et al., 2006) to determine whether a more detailed |  | | Journal (article/letter/editorial) | | explosive volcanism Charles Le Losq,1 Daniel R. Neuville,1,* Roberto Moretti,2,3 and Jacques Roux1 Équipe...water concentration with a high-spatial * E-mail: neuville@ipgp.fr † The Amorphous Materials special section...Fukumi et al. 1990; Neuville and Mysen 1996; Neuville 2006; Magnien et al. 2006; Neuville et al. 2004, 2006...linked directly to the polymerization network (Neuville 2005, 2006). At 200–700 cm–1, spectra exhibit...(McMillan and Piriou 1982; Seifert et al. 1982; Neuville and Mysen 1996). A peak near 800 cm–1 is present |  | | Journal (issue) | | provenances of lithic materials during Roman times in Belgium: a fruitful collaboration between geologists and...Vynckier, Flanders Heritage Agency, Brussels, Belgium. Mosaic, Roman house, Hondsstraat Tongeren. © Copyright...Géologique de Belgique Rue Jenner 13 B-1000 Bruxelles, Belgium Tel: +32 2 7887636 info.efg@eurogeologists.eu www...Goemaere , D. Pacyna , S. Pirson and P. Spagna In Wallonia, Earth Sciences specialists contribute to the...partes involucradas. I n Wallonia, a French-speaking region in south Belgium, archaeologists employed |  | Neuville, Daniel R., Cormier, Laurent, Flank, Anne-Marie, Briois, Valérie, Massiot, Dominique (2004) Al speciation and Ca environment in calcium aluminosilicate glasses and crystals by Al and Ca K-edge X-ray absorption spectroscopy. Chemical Geology, 213 (1) 153-163 doi:10.1016/j.chemgeo.2004.08.039 | Journal (article/letter/editorial) | | 1 44 27 24 87. E-mail address: neuville@ipgp.jussieu.fr (D.R. Neuville). 0009-2541/$ - see front matter...good candidates for the storage of nuclear waste (Neuville et al., 2003). The CaO–Al2O3–SiO2 system is remarkable...remarkable since glasses with very low 154 D.R. Neuville et al. / Chemical Geology 213 (2004) 153–163 ...constant ratio of CaO/Al2O3 (Higby et al., 1990; Neuville, 1992; Cormier et al., 2000, 2003). The glass...(Stebbins and Xu, 1997; Stebbins et al., 2000; Neuville et al., 2005), in contradiction with the simple |  | Le Losq, Charles, Berry, Andrew J., Kendrick, Mark A., Neuville, Daniel R., O'Neill, Hugh St. C. (2019) Determination of the oxidation state of iron in Mid-Ocean Ridge basalt glasses by Raman spectroscopy. American Mineralogist, 104 (7) 1032-1042 doi:10.2138/am-2019-6887 | Journal (article/letter/editorial) | | –11 (–4.7 and 6.3 in log units relative to the quartz-fayalite-magnetite, QFM, buffer) for ~24 h before...oxygen fugacity at 1400 °C, and relative to the quartz-fayalite-magnetite (QFM) buffer, of MORB glass...1990; Neuville and Mysen 1996; Neuville et al. 2004, 2008; Neuville 2006; Le Losq and Neuville 2013;...normalised cate glasses (Neuville and Mysen 1996; Mysen et al. 2003; Le Losq and Neuville 2013). This assignment...their comments. References cited Amalberti, J., Neuville, D.R., Sarda, P., Sator, N., and Guillot, B. (2011) |  | | Journal (article/letter/editorial) | | XANES investigation 27 Al MQ-MAS NMR, DANIEL R. NEUVILLE,1,* LAURENT CORMIER,2 and DOMINIQUE MASSIOT3 1...also good candidate for the storage of waste (Neuville et al., 2003). The CaO-Al2O3-SiO2 (CAS) system...theoretical studies (Cormier et al., 2000, 2003, 2004; Neuville et al., 2004) have related the Al speciation and...correspondence (neuville@ipgp.jussieu.fr). should be addressed 5071 5072 D. R. Neuville, L. Cormier...thermodynamic parameters are given elsewhere (Neuville, 1992; Cormier et al., 2004). The chemical compositions |  | | Journal (article/letter/editorial) | | Mysen, 1988; Dingwell et al., 1994; Mysen and Neuville, 1995; Farges et al., 1996a,b), there is no clear...air with the concentric viscometer described by Neuville (1992). The liquid was contained in a 29-mm inner...temperatures, the creep apparatus described by Neuville and Richet (1991) was used between 730 K and 990...decreasing temperatures, to better than 0.04 log (Neuville and Richet, 1991). Because structural relaxation...repeatedly observed for silicates (Richet and Neuville, 1992), the glass transition takes place when |  | Téqui, Christophe, Robie, Richard A., S. Hemingway, Bruce, R. Neuville, Daniel, Richet, Pascal (1991) Melting and thermodynamic properties of pyrope (Mg3Al2Si3O12) Geochimica et Cosmochimica Acta, 55 (4) 1005-1010 doi:10.1016/0016-7037(91)90158-2 | Journal (article/letter/editorial) | | RICHARD A. ROBIE,~ BRUCE S. HEMINGWAY,’ DANIEL R. NEUVILLE,’ and PASCAL RICHET’ ‘Institut de Physique du...only significant impurity in the final product was quartz, as evidenced by its 10 1 reflection at 3.34 8...pyrope samples mixed with known amounts of quartz, a quartz fraction of 1.5 + 0.5 wt% was determined.... The results were corrected for the quartz content with the enthalpy equations of RICHET et al. ( 1982)...molten garnets developed in a companion paper ( NEUVILLE and RICHET, 199 1) Finally, the data for pyrope |  | | Journal (article/letter/editorial) | | tectosilicate silica-rich melts Charles Le Losq, Daniel R. Neuville ⁎ Géochimie et Cosmochimie, CNRS, Institut de...Na2O–Al2O3–SiO2 (Mysen and Frantz, 1992, 1993, 1994a, 1994b; Neuville and Mysen, 1996). Moreover, several studies have...1982; Richet 1984; Toplis et al., 1997a,b; Neuville, 2006; Neuville et al., 2010; see also the compilation...Corresponding author. E-mail address: neuville@ipgp.fr (D.R. Neuville). 0009-2541/$ – see front matter ©...melt therefore deals with the Qz–Ab–Or system (Quartz–Albite–Orthoclase), which is of prime importance |  | | Journal (article/letter/editorial) | | glasses vary from 1.4 to 3.0 J K-’ (see Richet and Neuville, 1992). The entropy of 3.24 + 0.45 J/g-atom K...viscosity of melts just above the glass transition (Neuville and Richet, 1991). In this discussion, we reexamine...’ Data for minerals from Rohie et al. (1979). h Quartz. ’ Pseudowollastonite. d Wollastonite. ’ Heat capacity...Al, but not of Ca and Mg. As demonstrated by the quartz and stishovite forms of SiOz and GeO, (see Richet...composition. The difference between SiO? glass and quartz is referred as Qu. can depart markedly from a |  | | Journal (article/letter/editorial) | | glasses in a nepheline (NaAlSiO4)-forsterite (Mg2SiO4)quartz (SiO2) eutectic composition, and synthetic equivalents...melts in nepheline (NaAlSiO4)-forsterite (Mg2SiO4)-quartz (SiO2)– one of the model systems for alkali-rich...structures with varying composition and pressure (e.g., Neuville et al., 2004, 2006; Lee, 2005, 2011; Mysen and...glasses (Allwardt et al., 2007; Kelsey et al., 2008; Neuville et al., 2008), glasses in the diopside– Ca–tschermakite...multi-component oxide glasses (e.g., Lee and Sung, 2008; Neuville et al., 2008; Park and Lee, 2012, 2014, and references |  | Nienhuis, Emily T., Marcial, José, Robine, Thibaut, Le Losq, Charles, Neuville, Daniel R., Stennett, Martin C., Hyatt, Neil C., McCloy, John S. (2020) Effect of Ti4+ on the structure of nepheline (NaAlSiO4) glass. Geochimica et Cosmochimica Acta, 290. 333-351 doi:10.1016/j.gca.2020.09.015 | Journal (article/letter/editorial) | | Marcial, Thibaut Robine, Charles Le Losq, Daniel R. Neuville, Martin C. Stennett, Neil C. Hyatt, John S. McCloy...Nienhuis, E.T., Marcial, J., Robine, T., Le Losq, C., Neuville, D.R., Stennett, M.C., Hyatt, N.C., McCloy, J...obsidians to ~16 wt% in lunar glasses (Cicconi and Neuville, 2019), though in the latter, Ti3+ can be present...coordination and subsequent structural role (Mysen and Neuville, 1995). A good assessment of Ti coordination and...former, whereas [6]Ti acts as a modifier (Mysen and Neuville, 1995). [5]Ti is hypothesized to act as both a |  | Moulton, Benjamin J.A., Henderson, Grant S., Fukui, Hiroshi, Hiraoka, Nozomu, de Ligny, Dominique, Sonneville, Camille, Kanzaki, Masami (2016) In situ structural changes of amorphous diopside (CaMgSi2O6) up to 20 GPa: A Raman and O K-edge X-ray Raman spectroscopic study. Geochimica et Cosmochimica Acta, 178. 41-61 doi:10.1016/j.gca.2016.01.020 | Journal (article/letter/editorial) | | silica ([5]Si) are similar to stishovite rather than quartz, and therefore stishovite-like features do not...recent reviews by Rossano and Mysen (2012) and Neuville et al. (2014). For clarity, in this paper we only...glasses and in the minerals, corundum (Al2O3), quartz (SiO2) and berlinite (AlPO4), all of which are...K-edge XANES spectra of calcium aluminate minerals, quartz and berlinite show one to three contributions in...(Henderson et al., 2009). When comparing berlinite to quartz, the only difference in O K-edge spectra is the |  | | Journal (article/letter/editorial) | | between melts and crystals (FIG. 1) (Richet and Neuville 1992). A similar distinction holds for volume...melt and crystal, respectively (see Richet and Neuville 1992). The density contrast between these two...depressions, which reach for instance 800 K for quartz at a pressure of 1 GPa (FIG. 4). Comprehensive...of the chemical potential, equilibrium between quartz and SiO2 in the melt implies that µ SiO2c = µ SiO2l...conditions, the increase of the melting temperature of quartz with pressure is calculated without any fit parameter |  | Park, Sun Young, Park, Changkun, Kim, Hyun Na, Lee, Seoyoung, Lee, Sung Keun (2020) Structure of type A CAI-like melts: A view from multi-nuclear NMR study of melilite (Ca2Al2SiO7-Ca2MgSi2O7) glasses. Chemical Geology, 558. 119894pp. doi:10.1016/j.chemgeo.2020.119894 | Journal (article/letter/editorial) | | been well known (Kelsey et al., 2008; Le Losq and Neuville, 2017; Lee, 2011; Malfait et al., 2012; Mysen...Richet, 2019; Navrotsky et al., 1983; Neuville et al., 2006; Neuville et al., 2008; Toplis and Dingwell,...and Lee, 2020; Malfait et al., 2012; Neuville et al., 2006; Neuville et al., 2008; Park and Lee, 2014; Xue...Smithsonian and JEOL including periclase (MgO), quartz (SiO2), an orthite (CaAl2Si2O8), and wollastonite...cations (Kelsey et al., 2008; Le Losq et al., 2014; Neuville et al., 2008; Park and Lee, 2018, and references |  | | Journal (article/letter/editorial) | | properties of rhyolite and andesite melts Daniel R. Neuville 1, Philippe Courtial 1, Donald B. Dingwell 2,...(Adam and Gibbs 1965; Richet 1984; Richet and Neuville 1992), which provides a firm theoretical framework...Urbain et al. 1982; Riehet and Bottinga 1984b, Neuville and Richet 1991). Experimental methods The rhyolite...(1990b), and with the creep apparatus described by Neuville and Richet (1991). Within the range of stresses...data of Webb and Dingwell (1990b) and those of Neuville and Richet (1991). Most of the difference of about |  | Bartier, Danièle Ledésert, Meunier, Alain, Liewig, Nicole, Morvan, Gilles, Addad, Ahmed (2008) Hydrothermal alteration of the Soultz-sous-Forets granite (Hot Fractured Rock geothermal exchanger) into a tosudite and illite assemblage. European Journal of Mineralogy, 20 (1) 131-142 doi:10.1127/0935-1221/2008/0020-1787 | Journal (article/letter/editorial) | | et de l’Environnement, Bât. Neuville 3.15, mail Gay-Lussac, 95031 Neuville-sur-Oise, France 3 UMR 7517...that crystallized here ahead of a fibrous illite/quartz/calcite paragenesis. Tosudite occurs mainly in...consists of orthoclase (18.8 %), oligoclase (39.9 %), quartz (28.4 %), biotite (8.4 %) and amphibole (4.5 %)...clay particles, and the dissolution of magmatic quartz and biotite. This zone belongs to a highly fractured...wide), being organized on both sides of a 1-mm wide quartz vein (Fig. 2A). Close to the vein, the granite |  | | Journal (article/letter/editorial) | | Sciences (Richet and Bottinga, 1986, 1995; Richet and Neuville, 1992; Giordano et al., 2008). In simple chemical...al., 2009). Recently for example, Le Losq and Neuville (2017) following the work of others (Mysen, 1995)...inferred from Raman spectra (e.g. Le Losq and Neuville, 2017; Malfait, 2018; McMillan, 1984; Mysen, 1999)...dependence of viscosity (η ) (e.g., Richet and Neuville, 1992; Hess and Dingwell, 1996; Giordano et al..., 1997; Richet and Bottinga, 1986; Richet and Neuville, 1992; Russell and Giordano, 2017). Values of |
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