The Amulet of Mighty Fists's requirements are as follows:
Craft Wondrous Item, greater magic fang, creator’s caster level must be at least three times the amulet's bonus, plus any requirements of the melee weapon special abilities
I take the last line there to mean that the requirements of any of the weapon abilities you opt to add are essentially added to the list of requirements for the amulet (feel free to correct me if I'm wrong). If so, suppose I add the Frost property to the amulet. Frosts requirements are :
Craft Magic Arms and Armor, chill metal or ice storm
This is where I get a little confused. In Pathfinder you can ignore requirements for making non-spell trigger/completion magic items by jacking up your spellcraft DC, with one exception:
The DC to create a magic item increases by 5 for each prerequisite the caster does not meet. The only exception to this is the requisite item creation feat, which is mandatory.
My question is, can I ignore Craft Magic Arms and Armor, the "requisite" feat for Frost, because I'm just making an amulet (which already has its own corresponding requisite feat)? Or are these considered separate, with both requiring a mandatory feat?