This seed has an amazingly large cavern and ravine combined. Im sure there are hours of mining ahead of you here :D ! Loads of Iron, Coal, Gold and even DIAMONDS!
X: -111 / Y: 95 / Z: 228
Hmmm... good spot for a castle? :P
X: -207 / Y: 75 / Z: 338
Entrance to giant cave.
X: -276 / Y: 13 / Z: 339
X: -232 / Y: 14 / Z: 349
More Diamonds!!! (And look around the corner for even more.)