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Ryan Andrew Zeigler

Planetary Scientist; Lunar Sample Curator

Contact Information

Phone: 281.244.6923
Fax: 281-483-1573

ARES Ryan Andrew Zeigler


Ryan Zeigler is NASA's Apollo Sample Curator and the Manager of the Astromaterials Acquisition and Curation Office of the Astromaterials Research and Exploration Science (ARES) Division at the Johnson Space Center. The principal focus of Zeigler's research is the geochemistry and petrography of lunar samples to better understand how the Moon formed, how it differentiated and how impacts have subsequently altered its surface. In recent years he has performed concentrated research on lunar meteorites and small glass fragments found in the Apollo soils to a better understand how the Moon evolved. In his work as supervisor, he oversees a team of scientists who curate and study NASA's collection of extraterrestrial materials from the Moon, Mars, asteroids, comets, the Sun and even other stars.


DegreeArea of StudySchoolYear
Ph.D.Washington University2004
M.A.Washington University2000
B.A.State University of New York - Potsdam1998

Selected Publications

Korotev R. L., Jolliff B. L., Zeigler R. A., Seddio S. M, and Haskin L. A. (2011) "Apollo 12 revisited." Geochimica et Cosmochimica Acta 75, 1540-1573.

McCubbin, Francis M.; Jolliff, Bradley L.; Nekvasil, Hanna; Carpenter, Paul K.; Zeigler, Ryan A.; Steele, Andrew; Elardo, Stephen M.; Lindsley, Donald H. "Fluorine and chlorine abundances in lunar apatite: Implications for heterogeneous distributions of magmatic volatiles in the lunar interior." Geochimica et Cosmochimica Acta, ISSN: 0016-7037, Vol: 75, Issue: 17, Date: 2011-09-01, Start page: 5073-5093

Korotev R. L., Zeigler R. A., and Floss C. (2010) "On the origin of impact glass in the Apollo 16 regolith." Geochimica et Cosmochimica Acta 74, 7362-7388.

Korotev R. L., Zeigler R. A., Jolliff B. L., Irving A. J., and Bunch T. E. (2009) "Compositional and lithological diversity among brecciated lunar meteorites of intermediate iron composition." Meteoritics & Planetary Science 44, 1287-1322.

Zeigler R. A., Korotev R. L., Jolliff B. L., L Haskin. A., and Floss C. (2006) "The geochemistry and provenance of Apollo 16 mafic glasses." Geochimica et Cosmochimica Acta 70, 6050-6067.