PIA05676: Bromine and Chlorine Go Separate Ways
 Target Name:  Mars
 Is a satellite of:  Sol (our sun)
 Mission:  Mars Exploration Rover (MER)
 Spacecraft:  Spirit
 Instrument:  Alpha Particle X-ray Spectrometer 
 Product Size:  720 x 540 pixels (w x h)
 Produced By:  JPL
 Full-Res TIFF:  PIA05676.tif (230.8 kB)
 Full-Res JPEG:  PIA05676.jpg (39.8 kB)

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This graph shows the relative concentrations of bromine and chlorine at various locations on Earth and Mars. Typically, bromine and chlorine stick together in a fixed ratio, as in martian meteorites and Earth seawater. But sometimes the elements split apart and their relative quantities diverge. This separation is usually caused by evaporation processes, as in the Dead Sea on Earth. On Mars, at Meridiani Planum and Gusev Crater, this split has been observed to an even greater degree than seen on Earth. This puzzling result is currently being further explored by Mars Exploration Rover scientists. Data for the Mars locations were taken by the rover's alpha particle X-ray spectrometer.

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

Image Addition Date: