1. Earth and Planets Laboratory, Carnegie Institution for Science, 5241 Broad Branch Road NW, Washington, D.C. 20015, U.S.A.
2. Tetherless World Constellation, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180, U.S.A.
3. Department of Computer Science, University of Idaho, 875 Perimeter Drive, Moscow, Idaho 83844, U.S.A.
4. Department of Biochemistry and Molecular Biology, Rutgers University, 57 US Highway 1, New Brunswick, New Jersey 08901-8554, U.S.A.
5. Kola Science Centre of the Russian Academy of Sciences, Leninskiy Prospekt, 14, Moscow, 119991, Russia
6. Lamont-Doherty Earth Observatory, Columbia University, 61 Rte 9W, Palisades, New York 10964, U.S.A.
7. Mindat.org, 1113 Cambridge Hill Lane, Keswick, Virginia 22947-2749, U.S.A.
8. Carl Sagan Center, SETI Institute, 189 Bernardo Avenue, Suite 200, Mountain View, California 94043, U.S.A.
9. Department of Geosciences, University of Arizona, 1040 East 4th Street, Tucson, Arizona 85721, U.S.A.