the shape of things to come?

I'm quite excited... my friend has come up with what could well be the new logo for Rock Face Minerals - & I quite like it. In fact, I like it a lot.
I had 2 broad ideas for the logo - it could either be edgy & modern & shout "ROCK!" at you (think Tommy Vance on the radio, if you are old enough) or work up the Northern Ireland theme & have a Celtic feel.
He sketched out an idea, said "leave it with me" & by the time I got home he'd come up with this.
Let me know what you think - I'd love to hear your comments!