Minecraft wiki entry for Locations, associated text: Zombie dungeon (contains no chests): (X: -39, Y: 27, Z: 17).
End portal: (X: 13, Y: 29, Z: 27).
Nether portal: (X: -266, Y: 71, Z: -367).
Mineshaft chest - containing iron horse armor: (X: 394, Y: 15, Z: 279).
Diamond ore blob: (X: 388, Y: 15, Z: 291).
Cave spider spawner: (X: 391, Y: 15, Z: 291).
Desert temple: (X: 263, Y: 66, Z: -42).
Zombie dungeon: (X: 256, Y: 51, Z: -49).