NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Experimental Investigation of Chromium Behavior During Mercury's DifferentiationMercury is the most reduced terrestrial planet with the largest core/mantle size ratio and highest sulfur concentration on the surface. The MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft data allowed mapping of Mercury's surface elemental composition. Recent chromium mapping suggests Mercury's surface has on average 800 parts per million Cr with the highest values in the High Magnesium Region. These new data can give clues about Mercury's internal structure and the redox conditions under which it differentiated. In the present study, we present experimental data on the distribution of Cr among metal, silicate and sulfide liquids. We then combine them with data from previous studies and a model of planetary differentiation to discuss Mercury's bulk composition and its oxidation state.
Document ID
20180002939
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Boujibar, A. (Carnegie Institution for Science Washington, DC, United States)
Nittler, L. R. (Carnegie Institution for Science Washington, DC, United States)
Chabot, N. (Johns Hopkins Univ. Laurel, MD, United States)
McCubbin, F. M. (NASA Johnson Space Center Houston, TX, United States)
Righter, K. (NASA Johnson Space Center Houston, TX, United States)
Vander Kaaden, K. E. (Jacobs Technology, Inc. Houston, TX, United States)
McCoy, T. J. (Smithsonian Institution Washington, DC, United States)
Date Acquired
May 16, 2018
Publication Date
May 1, 2018
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
JSC-E-DAA-TN54660
Meeting Information
Meeting: Mercury: Current and Future Science of the Innermost Planet
Location: Columbia, MD
Country: United States
Start Date: May 1, 2018
End Date: May 3, 2018
Sponsors: Universities Space Research Association
Funding Number(s)
CONTRACT_GRANT: NNJ13HA01C
Distribution Limits
Public
Copyright
Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available