X-ray diffraction results from Mars Science Laboratory: Mineralogy of Rocknest at Gale Crater

D. L. Bish*, D. F. Blake, D. T. Vaniman, S. J. Chipera, R.V. Morris, D. W. Ming, A. H. Treiman, P. Sarrazin, S. M. Morrison, R. T. Downs, C. N. Achilles, A. S. Yen, T. F. Bristow, J. A. Crisp, J. M. Morookian, J. D. Farmer, E. B. Rampe, E. M. Stolper, N. Spanovich, MSL Science Team

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

246 Citations (Scopus)


The Mars Science Laboratory rover Curiosity scooped samples of soil from the Rocknest aeolian bedform in Gale crater. Analysis of the soil with the Chemistry and Mineralogy (CheMin) x-ray diffraction (XRD) instrument revealed plagioclase (~An57), forsteritic olivine (~Fo62), augite, and pigeonite, with minor K-feldspar, magnetite, quartz, anhydrite, hematite, and ilmenite. The minor phases are present at, or near, detection limits. The soil also contains 27 ± 14 weight percent x-ray amorphous material, likely containing multiple Fe3+- and volatile-bearing phases, including possibly a substance resembling hisingerite. The crystalline component is similar to the normative mineralogy of certain basaltic rocks from Gusev crater on Mars and of martian basaltic meteorites. The amorphous component is similar to that found on Earth in places such as soils on the Mauna Kea volcano, Hawaii.
Original languageEnglish
Article number1238932
Number of pages5
Issue number6153
Publication statusPublished - 27 Sep 2013


Dive into the research topics of 'X-ray diffraction results from Mars Science Laboratory: Mineralogy of Rocknest at Gale Crater'. Together they form a unique fingerprint.

Cite this