1. Department of Earth and Planetary Sciences; University of New Mexico; Albuquerque New Mexico 87131 USA
2. Now at Observatorio Vulcanológico y Sismológico de Costa Rica; Universidad Nacional; Heredia Costa Rica
3. Department of Earth and Planetary Sciences; University of New Mexico; Albuquerque New Mexico USA
4. Institute of Meteoritics; University of New Mexico; Albuquerque New Mexico USA
5. Now at Research School of Earth Sciences; Australian National University; Acton Canberra ACT Australia
6. Deutsches GeoForschungsZentrum; Helmholtzzentrum Potsdam; Potsdam Germany
7. Institut für Mineralogie; Leibniz Universität; Hannover Germany
8. National Museum of Natural History; Smithsonian Institution; Washington, D.C. USA
9. Institute of Experimental Mineralogy; Russian Academy of Sciences Moscow Russia
10. Centre de Recherches Petrographiques et Géochimiques; CNRS, Ecole Nationale Supérieure de Géologie, Vandoeuvre-les-Nancy France
11. Institut für Geowissenschaften, Goethe Universität Frankfurt; Frankfurt am Main Germany
12. European Synchrotron Radiation Facility; Grenoble France
13. Department of Earth Sciences, School of Earth and Planetary Sciences; Addis Ababa University; Addis Ababa Ethiopia
14. Red Sismológica Nacional; University of Costa Rica; San Jose Costa Rica
15. Graduate School of Oceanography; University of Rhode Island; Narragansett Bay Campus Narragansett Rhode Island USA