12.13.2016 Now and Long Ago at Gale Crater, Mars
12.13.2016 Where's Boron? Mars Rover Detects It
10.03.2016 Curiosity Self-Portrait at 'Murray Buttes'
10.03.2016 Butte 'M9a' in 'Murray Buttes' on Mars
09.19.2016 Ribbon Cutting
09.09.2016 Farewell to Murray Buttes (Image 5)
09.09.2016 Farewell to Murray Buttes (Image 4)
09.09.2016 Farewell to Murray Buttes (Image 3)
09.09.2016 Farewell to Murray Buttes (Image 2)
09.09.2016 Farewell to Murray Buttes (Image 1)
08.26.2016 Out-of-this-World Records
03.30.2016 Erisa Hines
03.30.2016 Buzz Aldrin
02.12.2016 Women in Science
02.09.2016 Adam Steltzner, a JPL engineer
01.27.2016 Night Close-up of Martian Sand Grains
01.27.2016 Curiosity Self-Portrait at Martian Sand Dune
12.17.2015 Alteration Effects at Gale and Gusev Craters
12.17.2015 Full-Circle View Near 'Marias Pass' on Mars
12.11.2015 Surface Close-up of a Martian Sand Dune
12.11.2015 Martian Sand Disturbed by Rover Wheel
11.24.2015 Carbon Exchange and Loss Processes on Mars
11.17.2015 Chemical Laptop 1
Signature of Hematite in 'Confidence Hills' Martian Rock (Labeled)This side-by-side comparison shows the X-ray diffraction patterns of two different samples collected from rocks on Mars by NASA's Curiosity rover. The images present data obtained by Curiosity's Chemistry and Mineralogy instrument (CheMin).
At left is a pattern of data from analysis of the "Cumberland" rock target in the "Yellowknife Bay" area investigated by Curiosity in 2013. The pattern at right is from the "Confidence Hills" target that was the first rock drilled after Curiosity reached the base of Mount Sharp in September 2014. A label in the right image points out evidence for the mineral hematite in this rock. (An unannotated view is also available.)
Hematite is an iron-oxide mineral. The rocks examined at Yellowknife Bay also contained iron oxides, predominantly magnetite. A much higher ratio of hematite to magnetite at Confidence Hills indicates that the ancient environmental conditions recorded in that rock involved more oxidation than the conditions recorded in the Yellowknife Bay rocks.
NASA's Jet Propulsion Laboratory, a division of Caltech in Pasadena, manages the Mars Science Laboratory project for NASA's Science Mission Directorate, Washington, and built Curiosity and CheMin.
For more information about Curiosity and its mission, visit http://www.nasa.gov/msl and http://mars.nasa.gov/msl.
Image Credit: NASA/JPL-Caltech