PIA05674: Outer Appearances Can Be Deceiving
Target Name: Mars
Is a satellite of: Sol (our sun)
Mission: Mars Exploration Rover (MER)
Spacecraft: Spirit
Instrument: Alpha Particle X-ray Spectrometer
Rock Abrasion Tool (RAT)
Product Size: 720 x 540 pixels (width x height)
Produced By: JPL
Full-Res TIFF: PIA05674.tif (137.9 kB)
Full-Res JPEG: PIA05674.jpg (34.22 kB)

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Original Caption Released with Image:
This graph shows the chemical composition of the rock at Gusev Craterdubbed "Mazatzal" after it was brushed and ground by the Mars ExplorationRover Spirit's rock abrasion tool. The data, taken by the rover's alphaparticle X-ray spectrometer over the last few sols, show that the amountof chlorine and sulfur tri-oxide in Mazatzal first increased afterbrushing, then diminished after grinding. The interior of the rock appears tohave the same chemical make-up as other volcanic or basalt rocks studiedin the Gusev Crater area ("Adirondack" and "Humphrey"). Its outer coatingor rind, on the other hand, appears to be of a different constitution.Scientists are still puzzling out the implications of these data.

The larger symbols on the graph represent inferred rock compositions,while the smaller symbols are actual data points. Observations were madeat the target dubbed "New York" on Mazatzal.

Image Credit:
NASA/JPL/Cornell/Max Planck Institute

Image Addition Date:
2004-04-01