Thanks for the greeting,
Encaitare, I'm a both LotR-crazed and a music major in college, so of course I'd think this is a great thread
Yes, it's in c minor, but there are many, many borrowed chords (ex. flat VI chords in a minor key) in much of what Shore composed for the movie. This has come up a few times recently in my theory class while working on identifying chord progressions/cliches - we've listened to my professor play the chords and noted that in some instances certain progressions remind us of LotR music. I really, really wish I could remember exactly which ones we discussed. But anyway, I suppose this makes the major/minor classification more difficult to distinguish. If it's considered minor though, the piece definitely ends on a Picardy third (I <3 Picardy thirds!).