1. Maine Mineral and Gem Museum 99 Main St. Bethel Maine 04217 USA
2. The Niels Bohr Institute University of Copenhagen Blegdamsvej 17 2100 Copenhagen Ø Denmark
3. Institut für Planetologie Westfälische Wilhelms‐Universität Münster Wilhelm‐Klemm‐Str. 10 48149 Münster Germany
4. Université de Bretagne Occidentale Institut Universitaire Europe′en de la Mer CNRS UMR 6538 Place Nicolas Copernic 29280 Plouzané France
5. The Norwegian Meteor Network Harestua Norway
6. Department of Physics & Astronomy Uppsala University Box 516 SE‐75210 Uppsala Sweden
7. Istituto Nazionale di Fisica Nucleare—Laboratori Nazionali del Gran Sasso Via G. Acitelli 22 67100 Assergi AQ Italy
8. Planetary and Space Sciences School of Physical Sciences The Open University Walton Hall, Milton Keynes MK7 6AA UK
9. Research Unit Analytical BioGeoChemistry (BGC) Helmholtz Zentrum München Ingolstädter Landstrasse 1 85764 Neuherberg Germany
10. Chair of Analytical Food Chemistry Technische Universität München Alte Akademie 10 85354 Freising Germany
11. Inst. für Geochemie und Petrologie ETH Zurich Clausiusstrasse 25 8092 Zürich Switzerland
12. Geological Survey of Denmark and Greenland Øster Voldgade 10 1350 Copenhagen K Denmark