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Author J. Duprat, C. Engrand, E. Dartois, J. Mathurin, S. Bernard, C. Le Guillou, H. Leroux, V. Vuitton, F.-R. Orthous-Daunay, B. Auge, B. Guerin, J. Rojas openurl 
  Title Preparing sample return from Ryugu and Bennu asteroids with micrometeorites from the Concordia collection Type Peer-reviewed symposium
  Year (down) 2019 Publication Journées sf2a Abbreviated Journal  
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  Abstract Hayabusa 2 and OSIRIS-REx space missions will give a unique access to study the composition of carbonaceous asteroids. A key issue will be the comparison of the organic and mineral compounds from these near-Earth active carbonaceous asteroids with that of carbonaceous chondrites, carbon-rich interplanetary dust particles and cometary samples (81P/Wild2 or in-situ analyses from 67P/CG). The comparison of Ryugu and Bennu samples with chondritic micrometeorites and with extremely carbon-rich interplanetary dust particles such as the Ultra-Carbonaceous MicroMeteorites (UCAMMs) will provide a unique tool to assess their possible links with cometary organics. Analytical methods applied to study micrometeorites from Concordia collection (Antarctica) and the most recent results obtained will be summarised. A particular emphasis will be put on the dedicated experimental protocols that we developed to analyse such micrometeorite fragments and study their mineral-organic association at scales relevant to their intimate association, ranging from tens of nanometers to a few microns.  
  Programme 1120  
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  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7908  
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