The chemical composition of Martian soil and rocks returned by the mobile alpha proton X-ray spectrometer: preliminary results from the X-ray mode.

@article{Rieder1997TheCC,
  title={The chemical composition of Martian soil and rocks returned by the mobile alpha proton X-ray spectrometer: preliminary results from the X-ray mode.},
  author={Rudolf Rieder and Thanasis Economou and Heinrich W{\"a}nke and A Turkevich and Jim Crisp and Johannes Br{\"u}ckner and Gerlind Dreibus and H Y McSween},
  journal={Science},
  year={1997},
  volume={278 5344},
  pages={1771-4}
}
The alpha proton x-ray spectrometer (APXS) on board the rover of the Mars Pathfinder mission measured the chemical composition of six soils and five rocks at the Ares Vallis landing site. The soil analyses show similarity to those determined by the Viking missions. The analyzed rocks were partially covered by dust but otherwise compositionally similar to each other. They are unexpectedly high in silica and potassium, but low in magnesium compared to martian soils and martian meteorites. The… CONTINUE READING
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