Minecraft 1.3.1 Island seed

Larger biomes

Seed:
-542423082

Its a medium sized island, surrounded by ocean.

One tree.

I'm using rei's mini map i found a slime chunk on the edge of the island (I Don't know how accurate it is)
Its worked for me.

Cords for center of chunk

x: 168.8
z: -1143.8