Benjamin Rondeau

Personal page
Position: Maître de Conférences
Research areas:
Phone: 02 51 12 52 70
Location: Nantes - Bât4 - 132

Publications

  • B. Chauviré, B. Rondeau, A. Alexandre, S. Chamard-Bois, C. La and F. Mazzero. Pedogenic origin of precious opals from Wegel Tena (Ethiopia): Evidence from trace elements and oxygen isotopes, Applied Geochemistry, Vol. 101, pp. 127 - 139. 2019. [More] 
  • A. Tarantola, P. Voudouris, A. Eglinger, C. Scheffer, K. Trebus and M. Bitte et al. Metamorphic and Metasomatic Kyanite-Bearing Mineral Assemblages of Thassos Island (Rhodope, Greece), Minerals, Vol. 9, pp. 252. 2019. [More] 
  • B. Rondeau, B. Devouard, D. Jacob, P. Roussel, N. Stephant and C. Boulet et al. Lasnierite, (Ca,Sr)(Mg,Fe)2Al(PO4)3, a new phosphate accompanying lazulite from Mt. Ibity, Madagascar: an example of structural characterization from dynamical refinement of precession electron diffraction data on submicrometre sample, European Journal of Mineralogy, Vol. 31, pp. 379-388, 03, 2019. [More] 
  • J. -P. Gauthier, N. Stephant, B. Rondeau, J. A. Cody and E. Fritsch. Aluminium diboride-type structure in Ethiopian opal-CT revealed by fast Fourier transform, Journal of Applied Crystallography, Vol. 51, pp. 27-34, Feb, 2018. [More] 
  • B. Rondeau, S. Chamard-Bois, E. Fritsch, F. Notari and B. Chauviré. Reverse dichromatism in gem andalusite related to total pleochroism of the Fe2+-Ti4+ IVCT, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, Vol. 204, pp. 611 - 619. 2018. [More] 
  • W. Rapin, B. Chauviré, T. S. J. Gabriel, A. C. McAdam, B. L. Ehlmann and C. Hardgrove et al. In Situ Analysis of Opal in Gale Crater, Mars, Journal of Geophysical Research: Planets, Vol. 123, pp. 1955-1972. 2018. [More] 
  • B. Chauviré, B. Rondeau and N. Mangold. Near infrared signature of opal and chalcedony as a proxy for their structure and formation conditions, EUROPEAN JOURNAL OF MINERALOGY, Vol. 29, pp. 409-421, Jun, 2017. [More] 
  • W. Rapin, P. -Y. Meslin, S. Maurice, R. C. Wiens, D. Laporte and B. Chauviré et al. Quantification of water content by laser induced breakdown spectroscopy on Mars, SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, Vol. 130, pp. 82-100, APR 1, 2017. [More] 
  • E. Fritsch, B. Rondeau, B. Devouard, L. Pinsault and C. Latouche. Why Are Some Crystals Gem QUALITY? CRYSTAL Growth Considerations On the “gem Factor”, The Canadian Mineralogist, Vol. 55, pp. 521. 2017. [More] 
  • B. Chauviré, B. Rondeau, F. Mazzero and D. Ayalew. The Precious Opal Deposit At Wegel Tena, Ethiopia: Formation VIA Successive Pedogenesis Events, The Canadian Mineralogist, Vol. 55, pp. 701. 2017. [More] 
  • M. Schoor, J. C. Boulliard, E. Gaillou, O. Hardouin Duparc, I. Estève and B. Baptiste et al. Plastic deformation in natural diamonds: Rose channels associated to mechanical twinning, Diamond and Related Materials, Vol. 66, pp. 102 - 106. 2016. [More] 
  • B. Chauviré, B. Rondeau, E. Fritsch, P. Ressigeac and J.-L. Devidal. BLUE SPINEL FROM THE LUC YEN DISTRICT OF VIETNAM., Gems & Gemology, Vol. 51. 2015. [More] 
  • N. Stephant, B. Rondeau, J.-P. Gauthier, J. A. Cody and E. Fritsch. Investigation of Hidden Periodic Structures on SEM Images of Opal-Like Materials Using FFT and IFFT, SCANNING, Vol. 36, pp. 487-499, SEP-OCT, 2014. [More] 
  • C. Ferraris, G. Carlo Parodi, S. Pont, B. Rondeau and J.-P. Lorand. Trinepheline and fabriesite: two new mineral species from the jadeite deposit of Tawmaw (Myanmar), EUROPEAN JOURNAL OF MINERALOGY, Vol. 26, pp. 257-265, Mar, 2014. [More] 
  • J. Feneyrol, G. Giuliani, D. Ohnenstetter, B. Rondeau, E. Fritsch and A. E. Fallick et al. New typology and origin of tsavorite based on trace-element chemistry, EUROPEAN JOURNAL OF MINERALOGY, Vol. 26, pp. 293-308, Mar, 2014. [More] 
  • T. Hainschwang, E. Fritsch, F. Notari, B. Rondeau and A. Katrusha. The origin of color in natural C center bearing diamonds, DIAMOND AND RELATED MATERIALS, Vol. 39, pp. 27-40, Oct, 2013. [More] 
  • T. Pradat, B. Rondeau and E. Fritsch. Unusual faceted massive fuchsite, GEMS & GEMOLOGY, Vol. 49, pp. 183-184, FAL, 2013. [More] 
  • B. Rondeau, J.-P. Gauthier, F. Mazzero, E. Fritsch, Y. Bodeur and B. Chauviré. On the origin of digit patterns in gem opal, GEMS & GEMOLOGY, Vol. 49, pp. 138-146, FAL, 2013. [More] 
  • T. Hainschwang, E. Fritsch, L. Massi, B. Rondeau and F. Notari. The C center isolated nitrogen-related infrared absorption at 2688 cm(-1): perfect harmony in diamond, JOURNAL OF APPLIED SPECTROSCOPY, Vol. 79, pp. 737-743, Nov, 2012. [More] 
  • B. Rondeau, B. Cenki-Tok, E. Fritsch, F. Mazzero, J.-P. Gauthier and Y. Bodeur et al. Geochemical and petrological characterization of gem opals from Wegel Tena, Wollo, Ethiopia: opal formation in an Oligocene soil, GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS, Vol. 12, pp. 93-104, May, 2012. [More] 
  • T. Hainschwang, E. Fritsch, F. Notari and B. Rondeau. A new defect center in type Ib diamond inducing one phonon infrared absorption: The Y center, DIAMOND AND RELATED MATERIALS, Vol. 21, pp. 120-126, Jan, 2012. [More] 
  • E. Fritsch, B. Rondeau, T. Hainschwang and S. Karampelas. Raman spectroscopy applied to Gemmology, APPLICATIONS OF RAMAN SPECTROSCOPY TO EARTH SCIENCES AND CULTURAL HERITAGE, Vol. 12, pp. 455-489. 2012. [More] 
  • B. Rondeau, J.-P. Gauthier and E. Fritsch. Gem News International: Naturally healed fractures in Ethiopian opals, GEMS & GEMOLOGY, Vol. 48, pp. 306-307, WIN, 2012. [More] 
  • T. Pradat, B. Rondeau and J.-P. Gauthier. Geikielite from Sri Lanka with fake star effect, GEMS & GEMOLOGY, Vol. 48, pp. 69, SPR, 2012. [More] 
  • V. Sautter, J.-P. Lorand, P. Cordier, B. Rondeau, H. Leroux and C. Ferraris et al. Petrogenesis of mineral micro-inclusions in an uncommon carbonado, EUROPEAN JOURNAL OF MINERALOGY, Vol. 23, pp. 721-729, Oct, 2011. [More] 
  • E. FRITSCH, C. P. -Y., B. Rondeau, S. KARAMPELAS and E. GAILLOU. Gem News International: An accidental corundum and lead glass triplet?, Gems & Gemology, Vol. 47, pp. 251-252. 2011. [More] 
  • B. Rondeau, E. FRITSCH, F.-P. MAZZERO and J. GAUTHIER. Opal: the craze for stability, In Color, Vol. n° 4, pp. 42-45. 2011. [More] 
  • E. Fritsch, P.-Y. Chatagnier, B. Rondeau, S. Karampelas and E. Gaillou. An accidental corundum and lead glass triplet?, GEMS & GEMOLOGY, Vol. 47, pp. 251-252, FAL, 2011. [More] 
  • B. Rondeau, E. Fritsch, F. Mazzero, D. Ayalew and Y. Bodeur. Amazing play-of-color opals from Wollo, Ethiopia toward a genetic model, GEMS & GEMOLOGY, Vol. 47, pp. 112, SUM, 2011. [More] 
  • E. Fritsch, F. Massuyeau, B. Rondeau, O. Segura and T. Hainschwang. Advancing the understanding of luminescence in gem materials, GEMS & GEMOLOGY, Vol. 47, pp. 123, SUM, 2011. [More] 
  • T. Pradat, B. Rondeau and E. Fritsch. Chatoyant quartz with cinnabar inclusions., GEMS & GEMOLOGY, Vol. 47, pp. 322-323, WIN, 2011. [More] 
  • B. Rondeau, E. Fritsch, F. Mazzero and J.-P. Gauthier. Sugar-acid treatment of opal from Wollo, Ethiopia, GEMS & GEMOLOGY, Vol. 47, pp. 333-334, WIN, 2011. [More] 
  • E. Fritsch, E. Gaillou, F. Massuyeau and B. Rondeau. Luminescence of opals: A witness to their geochemistry, GEOCHIMICA ET COSMOCHIMICA ACTA, Vol. 74, pp. A307, Jun, 2010. [More] 
  • B. Rondeau, E. Fritsch, B. Tok and F. Mazzero. New opals from Wollo, Ethiopia: Geochemical characterization, GEOCHIMICA ET COSMOCHIMICA ACTA, Vol. 74, pp. A880, Jun, 2010. [More] 
  • B. DEVOUARD, R. BORNET, F. NOTARI, B. Rondeau and E. FRITSCH. Use your cell-phone as a gemological tool, Gems & Gemology. 2010. [More] 
  • F. MAZZERO, C. DÉSAGULIER, B. Rondeau, D. AYALEW, G. EZEZEW and T. CENKI et al. L’opale du Wollo, Ethiopie : des mines de gisements, Revue de gemmologie a.f.g.. 2010. [More] 
  • B. Rondeau and E. FRITSCH. La morphologie du corindon., Le Règne Minéral.. 2010. [More] 
  • B. Rondeau, E. FRITSCH, J.-P. GAUTHIER, F. MAZZERO, B. CENKI-TOK and E. BEKELE et al. A new source of play-of-color opal at Wegel Tena, Wollo, Ethiopia, Gems & Gemology,, Vol. 46, pp. 90-102. 2010. [More] 
  • G. GIULIANI, M. RAKOTONDRAZAKY, D. OHNENSTETTER, G. CARLIER, J.-P. Lorand and B. Rondeau et al.. Géologie et minéralogie In Parcours de recherche à Madagascar. pp. 391-406. 2010. [More] 
  • B. Devouard, E. Medard, B. Rondeau and E. Fritsch. Rediscovery of sapphires in central France, GEMS & GEMOLOGY, Vol. 46, pp. 321, WIN, 2010. [More] 
  • B. Devouard, R. Bornet, F. Notari, B. Rondeau and E. Fritsch. Use your LCD screen as a gemological tool, GEMS & GEMOLOGY, Vol. 46, pp. 325, WIN, 2010. [More] 
  • B. Rondeau, E. Fritsch, F. Mazzero, J.-P. Gauthier, B. Cenki-Tok and E. Bekele et al. PLAY-OF-COLOR OPAL FROM WEGEL TENA, WOLLO PROVINCE, ETHIOPIA, GEMS & GEMOLOGY, Vol. 46, pp. 90-105, SUM, 2010. [More] 
  • T. Hainschwang, F. Notari, L. Massi, T. Armbruster, B. Rondeau and E. Fritsch et al. Hibonite: A new gem mineral from Myanmar, GEMS & GEMOLOGY, Vol. 46, pp. 135-138, SUM, 2010. [More] 
  • E. Fritsch and B. Rondeau. Gemology: The Developing Science of Gems, ELEMENTS, Vol. 5, pp. 147-152, Jun, 2009. [More] 
  • F. MAZZERO, J.-P. GAUTHIER, B. Rondeau, E. FRITSCH and E. BEKELE. Nouveau gisement d'opales d'Ethiopie dans la Province du Welo : premières informations, Revue de Gemmologie. 2009. [More] 
  • B. Rondeau. Comment naissent les gemmes, Têtes chercheuses. N° 10. 2009. [More] 
  • A. Mocquet, Y. LULZAC, E. FRITSCH and B. Rondeau. Traitement Zachery des turquoises : méthode d’identification simple fondée sur la microchimie, Revue de Gemmologie. 2009. [More] 
  • E. Fritsch, Y. Lulzac and B. Rondeau. Common opal from Argentina, GEMS & GEMOLOGY, Vol. 45, pp. 220-221, FAL, 2009. [More] 
  • E. Fritsch, C. Feydieu, J. Fauran, Y. Lulzac and B. Rondeau. A chalcedony-opal cameo with remarkable inclusions, GEMS & GEMOLOGY, Vol. 45, pp. 143-144, SUM, 2009. [More] 
  • E. Fritsch and B. Rondeau. Rare optical phenomenon in play-of-color opal, GEMS & GEMOLOGY, Vol. 45, pp. 147-148, SUM, 2009. [More] 
  • S. Karampelas, E. Fritsch, B. Rondeau, A. Andouche and B. Metivier. IDENTIFICATION OF THE ENDANGERED PINK-TO-RED STYLASTER CORALS BY RAMAN SPECTROSCOPY, GEMS & GEMOLOGY, Vol. 45, pp. 48-52, SPR, 2009. [More] 
  • B. Rondeau, F. Mazzero, E. Bekele, F.-P. Gauthier and E. Fritsch. New play-of-color opal from Welo, Ethiopia., GEMS & GEMOLOGY, Vol. 45, pp. 59-60, SPR, 2009. [More] 
  • B. Rondeau, E. Fritsch, B. Mocquet and Y. Lulzac. Some unusual dyed imitations., GEMS & GEMOLOGY, Vol. 45, pp. 74, SPR, 2009. [More] 
  • E. Gaillou, E. Fritsch, B. Aguilar-Reyes, B. Rondeau, J. Post and A. Barreau et al. Common gem opal: An investigation of micro- to nano-structure, AMERICAN MINERALOGIST, Vol. 93, pp. 1865-1873, NOV-DEC, 2008. [More] 
  • B. Rondeau, V. Sautter and J. Barjon. New columnar texture of carbonado: Cathodoluminescence study, DIAMOND AND RELATED MATERIALS, Vol. 17, pp. 1897-1901, Nov, 2008. [More] 
  • E. Gaillou, A. Delaunay, B. Rondeau, M. Bouhnik-le-Coz, E. Fritsch and G. Cornen et al. The geochemistry of gem opals as evidence of their origin, ORE GEOLOGY REVIEWS, Vol. 34, pp. 113-126, Sep, 2008. [More] 
  • T. Hainschwang, F. Notari, E. Fritsch, L. Massi, B. Rondeau and C. M. Breeding et al. HPHT treatment of CO2 containing and CO2-related brown diamonds, DIAMOND AND RELATED MATERIALS, Vol. 17, pp. 340-351, Mar, 2008. [More] 
  • G. GIULIANI, M. RAKOTONDRAZAFY, F. FONTAN, B. MOINE, G. CARLIER and J.-P. Lorand et al. Contribution des géologues et minéralogistes français et malgaches à la connaissance géologique et minière de Madagascar du 19ème au 21ème siècle, Le Règne Minéral. 2008. [More] 
  • J.-P. Lorand, G. CARLIER and B. Rondeau. La collection de roches (sédimentaires, métamorphiques et magmatiques), Muséum National d'Histoire Naturelle de Paris : La collection Lacroix "Le règne Minéral". 2008. [More] 
  • B. Rondeau, E. Fritsch, J.-J. Peucat, F. Steinar Nordrum and L. Groat. Characterization of emeralds from a historical deposit: Byrud (Eidsvoll), Norway, GEMS & GEMOLOGY, Vol. 44, pp. 108-122, SUM, 2008. [More] 
  • E. Fritsch, B. Rondeau, B. Mocquet and Y. Lulzac. ``Red andesine{''} from China: Possible indication of diffusion treatment, GEMS & GEMOLOGY, Vol. 44, pp. 166-167, SUM, 2008. [More] 
  • B. Rondeau, E. Fritsch, Y. Lulzac and B. Mocquet. Unusual glass imitation of rubellite, GEMS & GEMOLOGY, Vol. 44, pp. 186-187, SUM, 2008. [More] 
  • E. Fritsch, Y. Lulzac and B. Rondeau. Tourmalines and their imitations obtained in Kandahar, Afghanistan, GEMS & GEMOLOGY, Vol. 44, pp. 187-188, SUM, 2008. [More] 
  • J.-M. Arlabosse, B. Rondeau and E. Fritsch. A blue manganaxinite., GEMS & GEMOLOGY, Vol. 44, pp. 81, SPR, 2008. [More] 
  • E. Fritsch, B. Rondeau, T. Hainschwang and M.-H. Quellier. A contribution to the understanding of pink color in diamond: The unique, historical, DIAMOND AND RELATED MATERIALS, Vol. 16, pp. 1471-1474, Aug, 2007. [More] 
  • B. Rondeau, E. Fritsch, M. Moore, E. Thomassot and J.-F. Sirakian. On the growth of natural octahedral diamond upon a fibrous core, JOURNAL OF CRYSTAL GROWTH, Vol. 304, pp. 287-293, JUN 1, 2007. [More] 
  • E. Fritsch, T. Hainschwang, L. Massi and B. Rondeau. Hydrogen-related optical centers in natural diamond: An update, NEW DIAMOND AND FRONTIER CARBON TECHNOLOGY, Vol. 17, pp. 63-89. 2007. [More] 
  • B. Rondeau. Spurious ``spiral phantom{''} in diamond, GEMS & GEMOLOGY, Vol. 43, pp. 253-254, FAL, 2007. [More] 
  • B. Rondeau. Proper terminology for diamond growth, GEMS & GEMOLOGY, Vol. 43, pp. 96-97, SUM, 2007. [More] 
  • E. Fritsch, E. Gaillou, B. Rondeau, A. Barreau, D. Albertini and M. Ostroumov. The nanostructure of fire opal, JOURNAL OF NON-CRYSTALLINE SOLIDS, Vol. 352, pp. 3957-3960, OCT 15, 2006. [More] 
  • B. Rondeau, E. Fritsch, P. LeFevre, M. Guiraud, A.-M. Fransolet and Y. Lulzac. A Raman investigation of the amblygonite-montebrasite series, CANADIAN MINERALOGIST, Vol. 44, pp. 1109-1117, Oct, 2006. [More] 
  • E. Fritsch, B. Rondeau and F. Notari. Cleavage resistance of plastically deformed natural diamonds revealed by dissolved planar features, DIAMOND AND RELATED MATERIALS, Vol. 15, pp. 1310-1313, Sep, 2006. [More] 
  • B. Rondeau. More about ``medusa quartz{''}, GEMS & GEMOLOGY, Vol. 42, pp. 97, SUM, 2006. [More] 
  • E. Fritsch, M. Moore, B. Rondeau and R. Waggett. X-ray topography of a natural twinned diamond of unusual pseudo-tetrahedral morphology, JOURNAL OF CRYSTAL GROWTH, Vol. 280, pp. 279-285, JUN 15, 2005. [More] 
  • E. Gaillou, B. Rondeau, E. Fritsch, M. Bouhnik-Le Coz, G. Cornen and M. Ostroumov. Toward a geochemistry of opals, GEOCHIMICA ET COSMOCHIMICA ACTA, Vol. 69, pp. A279, May, 2005. [More] 
  • B. Rondeau and M. Macri. ``Medusa quartz{''} with gilalite inclusions., GEMS & GEMOLOGY, Vol. 41, pp. 271-272, FAL, 2005. [More] 
  • B. Rondeau, E. Fritsch, M. Guiraud, J. Chalain and F. Notari. Three historical `asteriated' hydrogen-rich diamonds: growth history and sector-dependent impurity incorporation, DIAMOND AND RELATED MATERIALS, Vol. 13, pp. 1658-1673, Sep, 2004. [More] 
  • E. Fritsch, E. Gaillou, M. Ostroumov, B. Rondeau, B. Devouard and A. Barreau. Relationship between nanostructure and optical absorption in fibrous pink opals from Mexico and Peru, EUROPEAN JOURNAL OF MINERALOGY, Vol. 16, pp. 743-751, SEP-OCT, 2004. [More] 
  • B. Rondeau, E. Fritsch, M. Guiraud and C. Renac. Opals from Slovakia ("Hungarian" opals): a re-assessment of the conditions of formation, EUROPEAN JOURNAL OF MINERALOGY, Vol. 16, pp. 789-799, SEP-OCT, 2004. [More] 
  • G. Giuliani, M. Chaussidon, H.-J. Schubnel, D. H Piat, C. Rollion-Bard and C. France-Lanord et al. Oxygen isotopes and emerald trade routes since antiquity, Science, Vol. 287, pp. 631-633. 2000. [More]