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9 results on '"Pilliere, Henry"'

2. Simultaneous combined XRF-XRD analysis of geological sample: New methodological approach for on-site analysis on New-Caledonian Ni-rich harzburgite

Author

Maestracci, Barbara, Delchini, Sylvain, Chateigner, Daniel, Pilliere, Henry, Lutterotti, Luca, Borovin, Evgeny, Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), Laboratoire de cristallographie et sciences des matériaux (CRISMAT), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), INEL-INNOV, University of Trento [Trento], and European Project: 689868,H2020,H2020-SC5-2015-one-stage,SOLSA(2016)

Subjects
Geochemistry, Combined XRF-XRD analysis, Sample preparation, [SDU.STU]Sciences of the Universe [physics]/Earth Sciences, Chemical substitution, Mineralogy, Field analysis
Abstract

International audience; There is a growing interest in on-site, real-time analytical solutions for mining and environmental projects to characterize large areas and/or volumes of raw materials that are sometimes highly heterogeneous in terms of elemental distribution and mineralogy. Several fast and cost-effective methods are used for rapid on-site screening and real-time chemical and mineralogical characterization, such as portable X-ray fluorescence (pXRF) and X-ray diffraction (pXRD). However, these methods are not always applicable due to limitations in the detection and quantification of light elements (Mg, Al, Si) for pXRF or complex or minor minerals for pXRD, whose results need to be supported by laboratory analysis.This study presents a new methodological approach for in situ rapid chemical and mineralogical characterization of samples, based on the use of a transportable instrument (called ID2B) that allows, in a single acquisition step, a combined XRD-XRF analysis to identify and quantify the chemical elements and their associated minerals. The HI0 harzburgite sample from New Caledonia used to evaluate the data was analyzed in the laboratory (SEM-EDS, EPMA, XRF and XRD) and with the ID2B instrument to highlight the potential of our new methodology. In order to demonstrate the interest of using the ID2B combined XRF-XRD analysis approach directly in the field, where sample preparation is not always easy to implement, this comparison was made on the same sample (HI0), prepared in two different ways, either as a powderized (optimal preparation) or as-sawn (unprepared) sample. After automated processing of the combined XRF-XRD datasets acquired with the ID2B instrument, the chemical elements and mineralogical phases identified on both the powder and as-sawn samples are identical to the laboratory analyses.The chemical proportions calculated from the combined XRF-XRD data sets are also close to the laboratory XRF analysis with relative errors

Published
2023
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3. Caractérisation des matériaux massifs par imagerie

Author

Berthier, Eric, Pilliere, Henry, Fontugne, Christophe, El Mendili, Anas, and Sciencesconf.org, CCSD

Subjects
[SDU] Sciences of the Universe [physics], Cartographie, Rayons X, XRD, XRF, Echantillon massif, Diffraction, EQUINOX 100, Fluorescence
Published
2021

5. Building a Hyperspectral Library and its Incorporation into Sparse Unmixing for Mineral Identification

Author

Bui, Thanh, primary, Orberger, Beate, additional, Blancher, Simon B., additional, Mohammad-Djafari, Ali, additional, Pilliere, Henry, additional, Salaun, Anne, additional, Bourrat, Xavier, additional, Maubec, Nicolas, additional, Lefevre, Thomas, additional, Rodriguez, Celine, additional, Vaitkus, Antanas, additional, Grazulis, Saulius, additional, Duee, Cedric, additional, Harang, Dominique, additional, Wallmach, Thomas, additional, El Mendili, Yassine, additional, Chateigner, Daniel, additional, Buxton, Mike, additional, and Le Guen, Monique, additional

Published
2018
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6. Combined mineralogy and chemistry on drill cores: challenging for on-line-real-time analyses

Author

Duee, Cedric, Nicolas Maubec, Laperche, Valerie, Capar, Laure, Bourguignon, Anne, Bourrat, Xavier, El Mendili, Yassine, Chateigner, Daniel, Gascoin, Stephanie, Mariotto, Gino, Giarola, Marco, Kumar, Arun, Daldosso, Nicola, Zanatta, Marco, Speghini, Adolfo, Sanson, Andrea, Lutterotti, Luca, Borovin, Evgeny, Bortolotti, Mauro, Secchi, Maria, Montagna, Maurizio, Orberger, Beate, Le Guen, Monique, Salaun, Anne, Rodriguez, Celine, Trotet, Fabien, Kadar, Mohamed, Devaux, Karen, Pilliere, Henry, Lefevre, Thomas, Eijkelkamp, Fons, Nolte, Harm, Koert, Peter, Grazulis, Saulius, Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), Laboratoire de cristallographie et sciences des matériaux (CRISMAT), École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC), Department of Computer Science [Verona] (UNIVR | DI), University of Verona (UNIVR), Universita degli Studi di Padova, Dipartimento di Ingegneria dei Materiali, Università degli Studi di Trento (UNITN), Géosciences Paris Sud (GEOPS), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), ERAMET RESEARCH, ThermoFisher Scientific, Thermofisher Scientific, Royal Eijkelkamp, Vilnius University [Vilnius], Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Università degli studi di Verona = University of Verona (UNIVR), Università degli Studi di Padova = University of Padua (Unipd), University of Trento [Trento], and ERAMET (ERAMET)

Subjects
drill core, [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry, combined mineralogy and chemistry, on-line real-time analyses
Abstract

International audience; In order to evaluate the instrumental parameters for the combined on-line-on-mine-real-time expert system SOLSA (http://www.solsa-mining.eu), portable and laboratory analyses were carried out on coarse granite, sandstone, serpentinized harzburgite and siliceous breccia. Each sample was studied at 5 different surface roughnesses (sonic or diamond drilled, cut, polished at 6 µm and 0.25 µm, sample powders). X-ray diffraction (XRD), portable Infra-Red (pIR) and X-ray-fluorescence (pXRF), and laboratory micro-Raman spectroscopy gave complementary and corroborating results. No major effect on the analyses was noted for the selected surface states. pXRF gave variable results except for the homogeneously serpentinized harzburgite, related to coarse or contrasting grain sizes or pores, small spot size (3 mm) and needs close-to-surface analyses. Portable IR (spot size 1.76 cm 2) is carried out close to surfaces while Raman spectroscopy (1-2 µm) is performed at distance. Sampling strategies have to be defined for each lithology. Major challenges for a combined on-line analysis are to adapt the specificities of the techniques to (1) analyse similar surface areas (from ~2 cm 2 (pIR) to < µm (Raman)), (2) smartly combine all the techniques into a single instrument, and (3) develop appropriate databases to reach a reliable " real-time " outcome results, which can be used for more precise geomodeling, and to rapidly define exploration and beneficiation parameters.

Published
2017

9. Mineral identification using a new hyperspectral library and sparse unmixing techniques.

Author

Bui, Thanh, Orberger, Beate, Blancher, Simon, Mohammad-Djafari, Ali, Pilliere, Henry, Salaun, Anne, Xavier Bourrat, Maubec, Nicolas, Lefevre, Thomas, Rodriguez, Celine, Vaitkus, Antanas, Grazulis, Saulius, Duée, Cedric, Harang, Dominique, Wallmach, Thomas, El Mendili, Yassine, Chateigner, Daniel, Buxton, Mike, and Le Guen, Monique

Published
2018

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