Published online today in Geophysical Research Letters:

Stalport, Fabien; Coll, Patrice; Cabane, Michel; Person, Alain; González, Rafael Navarro; Raulin, Francois; Vaulay, Marie Jo; Ausset,
Patrick; McKay, Chris P.; Szopa, Cyril; Zarnecki, John
Search for past life on Mars: Physical and chemical characterization of minerals of biotic and
abiotic origin: part 1 - Calcite
Geophys. Res. Lett., Vol. 32, No. 23, L23205
10.1029/2005GL023403
15 December 2005
Abstract