The January 2007 issue of Meteoritics & Planetary Science is now available. Note the following paper:

Phase equilibrium investigations of the Adirondack class basalts from the Gusev plains, Gusev crater, Mars
Anna G. Monders, Etienne Médard, and Timothy L. Grove
Meteor. Planet. Sci. 42, 131-148 (2007)

For those without access to MAPS, a 487 Kb PDF preprint is available.