New feature Article!
A Conspicuous Clay Ovoid in Nakhla:
Evidence for Subsurface Hydrothermal Alteration
on Mars with Implications for Astrobiology,
Elias Chatzitheodoridis, Sarah Haigh, Ian Lyon
Astrobiology. August 2014, 14(8): 651-693.
Open access article:
download full paper from here (PDF) or,
from here (Research Gate)
See the abstract here.