re: New paper on the insensitivity of the TES spectrometer on actual field samples.
The article Kirkland by et.al. describes measurements with other spectrometers that were shown not to be able to make the discrimination in the field though they could on pristine laboratory samples.
Since the TES instrument is of a similar type, this is likely to be the case with the TES instrument as well. As described in the calibration reports by Christensen and others, the TES instrument was only tested on laboratory samples, not in the field.
Bob Clark