1. Department of Museum Collection Utilization Studies, The University Museum, University of Tokyo, Hongo 7-3-1, Bunkyoku, Tokyo 113-0033, Japan.
2. Department of Earth and Planetary Science, University of Tokyo, Hongo 7-3-1, Bunkyoku, Tokyo 113-0033, Japan.
3. Department of Geosystem Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan.
4. Planetary Science Institute, 1700 East Fort Lowell Road, Suite 106, Tucson, AZ 85719, USA.
5. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan.