Funny you should say that...
Since the original Lunar Reconnaissance Orbiter of the 1960's probe operators have detected orbital anomalies which indicates "mass concentrations" below the surface.
So what could another name for a "Masscon" be?
An ore body of course. And this instrument can give us some of that bodies electrical properties as well.
Thumbs up to the team. They seem to have built it to confirm a theory, but the theory is not confirmed. They have new facts and new questions to ask.