Ann: Field Exploration Update - Ivittuut Greenland Project, page-6

Looks like the Thermo Nitro El3.

If you have a read of the following research paper; you get a better idea of it's limitations (co-relation coefficient) (Probably explains why results are "withheld").
https://www.researchgate.net/publication/266521264_Evaluation_of_Rare_Earth_Element-enriched_Sedimentary_Phosphate_Deposits_Using_Portable_X-ray_Fluorescence_XRF_Instruments

so might be even better results when actually run through the lab. A part from the correlation co-efficent, could also be hitting the limits of the filters.