In Kingdom of Hearts 2 where do you get the stuff for the Ultima Weapon

Ultima weapons materials: 7 orichalum+:
1. clear atlantica
2. clear 100 acre woods
3. the smal chest in "the world that never was" in the brink of despare beside the big chest.
4. clear Goddess Of Fate Cup in Olympus colisium.
5. chest in twiligh town in sunset terrace jump on to the moving train then go up one of the buildings. search it until you find it.
6. chest in space paranoid(the second visit there) just before you fight commander sark and the MCP.
7. collect all materials including all materials. You need every meaterial in the game(shard,stones,gems,and crystals.

Energy Crystal:-required to have the ammount of orichalum+s you need. This is dropped by bookmasters in Radiant Garden/Hollow Bastion near Merlin's House.
These are charcaters are green and floats w/ bookks.

Twilight and Dense Crystal:-Nobodies on Naught Skyway. Go to Naught skyway in The World That Never Was.
Go fight the nobodies in there to get the Twilight and Dense crystal and items.

Serenity crystal:- You can get these from the Moogles for giving them complete sets of materials.
Another thing to get serenity crystals is to defeat "Nobody Assasins" in The World That Never Was.

Mythril crystals:-Found in random item chest.

Regular Orichalum:-Found in random item chest.

Item/needed:
Orichalum+:7
Oichalum:3
Energy Crystal:1
Twilight Crystal:1
Dense Crystal:1
Mythril Crystal:1
Serenity Crystal:7

NOTE:
The Ultimate Recipe is in the old mansion. Go to the room where Goofy and Donald slept in one of the pods in the under ground computer room.
There you will see beside a small chest, that's where you will see the ultimate recipe.

In the recipe its says that you need 13 orichalum+, don't bother finding the 13 orichalum+ because there's only 7 orichalum+ in the game.
So just get all 7 orichalum+ for the Ultima Weapon. You'll find out.