and wonder what kind of mats....
There are a number of new General Items which seem to be crafting materials. Such as:
Tellurium Ingot
An ingot of refined tellurium.
Black Jadeite
A black jewel.
Vicuna Cloth
A cloth made of vicuna fibers.
Ash Wood
A plank of ash wood.
White Serpent Leather
A faded white square of leather.
White Dragon Scale
A very rare white dragon scale.
Hydro Oil
A highly refined oil.
Along with the above, there are five Alabaster Parts and Murky Parts (Parts 1-4 and a Core). These seem to be similar to the old Ultima/Omega parts (i.e. Ultima's Cerebrum) as they have descriptions such as:
Murky Part I
A part of some odd contraption in Apollyon shaped like a forelimb.
None of the new materials I put here, nor the parts, have rare/ex flags on them. These will probably be used in the synthesis recipes, but can't say for sure.