Ian A. Franchi
Open University
425 Papers
1.4K Citations
Ian A. Franchi is an academic researcher from Open University. The author has contributed to research in topics: Chondrite & Meteorite. The author has an hindex of 55, co-authored 388 publications. Previous affiliations of Ian A. Franchi include Leiden University & Max Planck Society.
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Papers
Chemical and isotopic characteristics of the Didwana‐Rajod (H5) chondrite
B. S. Paliwal,R. R. Mahajan,S. V. S. Murty,Anil D. Shukla,P. N. Shukla,Narendra Bhandari,R. Natarajan,Robert Hutchison,Sara S. Russell,Ian A. Franchi +9 more
TL;DR: The mineralogical and chemical characteristics of the Didwana-Rajod meteorite are described in this article, where the meteorite is classified as H5 chondrite based on microscopic, chemical, isotopic and electron probe microanalysis, and track density, rare gas isotopic ratios, 60Co activity and other radionuclide data are consistent with a preatmosphere radius of about 15 cm, corresponding to a mass of about 50 kg.
Aqueous alteration without a pronounced oxygen-isotopic shift: implications for the asteroidal processing of chondritic materials
Philip A. Bland,Martin Lee,A. S. Sexton,Ian A. Franchi,Anthony E. Fallick,Martin F. Miller,J. M. Cadogan,Frank J. Berry,C. T. Pillinger +8 more
TL;DR: In this article, the L-group ordinary chondrites weathered in Antarctica were used as an analogue for the terrestrial silicates and it was shown that alteration is a two-stage process, with an initial phase producing only a negligible isotopic effect.
Organics Captured from Comet Wild 2 by the Stardust Spacecraft
S. A. Stanford,Jérôme Aléon,C. M. O'd. Alexander,Tohru Araki,Saša Bajt,G. A. Baratta,Janet Borg,John Robert Brucato,Mark J. Burchell,Henner Busemann,Anna L. Butterworth,Simon J. Clemett,George D. Cody,Luigi Colangeli,George Cooper,Louis Le Sergeant d'Hendecourt,Zahia Djouadi,Jason P. Dworkin,G. Ferrini,Holger Fleckenstein,George J. Flynn,Ian A. Franchi,Marc Fries,Mary K. Gilles,Daniel P. Glavin,M. Gounelle,F. Grossemy,Chris Jacobsen,Lindsay P. Keller,A. D. Kilcoyne,Jan Leitner,Graciela Matrajt,Anders Meibom,Mennella,Smail Mostefaoui,Larry R. Nittler,Maria Elisabetta Palumbo,François Robert,Alessandra Rotundi,Christopher J. Snead,Maegan K. Spencer,Andrew Steele,Thomas Stephan,Tolek Tyliszczak,Andrew J. Westphal,S. Wirick,Brigitte Wopenka,H. Yabuta,Richard N. Zare,Michael E. Zolensky +49 more
- 01 Jan 2007
TL;DR: In the Comet Wild 2 samples, organic compounds were found to be rich in O and N compared to meteoritic organics as discussed by the authors, suggesting that some organic compounds have an interstellar/protostellar heritage.
Mass-independent fractionation of oxygen isotopes during thermal decomposition of carbonates
Martin F. Miller,Ian A. Franchi,Mark H. Thiemens,Teresa L. Jackson,André Brack,Gero Kurat,Colin T. Pillinger +6 more
TL;DR: Findings of a 17O anomaly being generated from a solid, and solely by thermal means, provide a further challenge to current understanding of the nature of mass-independent isotopic fractionation.
Maribo—A new CM fall from Denmark
Henning Haack,Thomas Grau,Addi Bischoff,M. Horstmann,John T. Wasson,A. N. Sørensen,Matthias Laubenstein,Ulrich Ott,Herbert Palme,Marko Gellissen,Richard C. Greenwood,Victoria K. Pearson,Ian A. Franchi,Zelimir Gabelica,Philippe Schmitt-Kopplin +14 more
TL;DR: Maribo is a new Danish CM chondrite which fell on January 17, 2009, at 19:08:28 CET as discussed by the authors, and was observed by many eye witnesses and recorded by a surveillance camera, an all sky camera, a few seismic stations, and by meteor radar observatories in Germany.