I am assuming you are talking about the empty outcrop graph, not the soils graph, which is interesting in it's own right.

I'd stare at it. Print it out and look at it. Then Think. Then compare the values to other published spectra of known rocks on earth. I'd compare the values within the data set, what is the value of sulfur, what are the metals, how much silica, alkalis, etc. I'd think some more then post some ideas for discussion on a board such as this 'cause my wife gets tired of me speculating outloud.

Don't worry, if it is a worry, I'm not going to publish a paper or anything.

I just feel as a tax-payer that this data belongs to us, not just the scientists at JPL. What, are we awaiting a review by politicians? Industry? What does it take to do a screen capture of the graph on their screen and post it, huh?

I wrote quite the rant after logging off last night, maybe I'll post it later.