The bright gully deposits that have been found to be currently forming by Malin/Edgett might be places to look with CRISM for recently formed aqueous minerals:

EARLY HIRISE OBSERVATIONS OF FLUVIAL AND HYDROTHERMAL FEATURES. V.C. Gulick1, A.
S. McEwen2, and the HiRISE team. 1 NASA Ames/SETI Institute, MS 239-20, NASA Ames Research Center, Moffett
Field, CA 94035, (email: ****@mail.arc.nasa.gov), 2University of Arizona, Department of Planetary Sciences,
Tucson, AZ, 85721
Lunar and Planetary Science XXXVIII (2007)
http://www.lpi.usra.edu/meetings/lpsc2007/pdf/2300.pdf

HiRISE OBSERVATIONS OF MARS. A. S. McEwen1, and the HiRISE team. 1University of Arizona, Department
of Planetary Sciences, Tucson, AZ, 85721 (email: ****@lpl.arizona.edu).
Lunar and Planetary Science XXXVIII (2007)
"Gullies are Active: The mid-latitude gullies have
attracted great interest because they may indicate that
liquid water briefly visits the surface even in the present-
day climate. Channels down to the limits of
HiRISE detection (~0.5 m wide) are common in these
locations. In pole-facing slopes of the southern hemisphere
there are often dark inner channels where it
appears than seasonal frost and dust has been removed,
but it is not clear if this seasonal process serves to
gradually enlarge the gullies or is just a very surficial
process.
"Observations of new bright deposits corresponding
to the depositional fans of gullies suggest activity in
recent years [8]. HiRISE has imaged one of these deposits
in stereo (PSP_1714_1415 and 2136_1415), and
the bright material appears to have been deposited by
some especially recent gully channels (which cut other
channels). There is no sign of aeolian deposition onto
or erosion of the bright deposit."
http://www.lpi.usra.edu/meetings/lpsc2007/pdf/2031.pdf

SOME INSIGHTS ON GULLY MORPHOLOGY AND FORMATION ON MARS FROM HIRISE . V.C.
Gulick1, A. Davatzes, K. Kolb2 and the HiRISE team. 1 NASA Ames/SETI Institute, MS 239-20, NASA Ames Research
Center, Moffett Field, CA 94035, (email: ****@mail.arc.nasa.gov), 2 LPL, University of Arizona, Tucson,
AZ.
Seventh International Conference on Mars.
http://www.lpi.usra.edu/meetings/7thmars2007/pdf/3371.pdf

Bob Clark