Where'd you get even that much of a chart? I don't see it on the JPL or the Cornell sites.

For reference, that is more than 10 times as many counts from sulfur as in the Gusev soil, which already contained enough sulfur to be worth mentioning.

In fact, 3 counts/sec is as high as silicon was in the Gusev soil, and much higher than iron.

I have no idea whether the bulk concentration is proportional to the counts. I guess it also depends on things like the density of the material (i.e., that 3 counts/sec might be part of a much higher total flux than from the Gusev soil for whatever reason).

Nonetheless, it does suggest that there is a LOT of sulfur in that outcrop, a LOT!

Anyone who is doing anything but making SWAGs about how to read an APXS spectrum, please feel free to set me straight! :)