A mobile LIBS tank.
Looks like Laser Induced Breakdown Spectroscopy. Not strictly a Chemical imager, but rather an elemental imager. The distinction is this: You can tell the elemental composition of a substance, modulated by the ionizability of the elements themselves.
It does not detect the chemical state these elements are in, unless it's paired with a Raman flourescence detection capability. The press release just mentions a plasma though which seems to rule this out.
Still potentially powerful though. Especially when paired with a library of mineral reactions to this technique.