Mundgeirr has told you that the quality you wish to bestow upon your weapon can only be performed at the forge within the Library of Steel.
'There is but one place where a quality such as you seek might be crafted. It was once known as the Library of Steel. It contains tomes detailing many of the finest secrets of dwarf-smithcraft and is protected from theft and destruction by ancient wards.
'Since we rediscovered it, however, it has likewise been found by the Ghâsh-hai who have taken hold of it. I cannot be certain what they intend to do with it, but it can't be any good.
'If you wish to obtain your quality, you will have to free the forge; however, before you even attempt it, you will need to bring me an infused adamant, which can hold the quality.'
Mundgeirr has asked you to bring him an infused adamant with which he can help you to bestow a quality upon your weapon. Unfortunately, he does not know where to find such a stone.
Mundgeirr can be found at the Dolven-view camp in Moria.
Mundgeirr has bidden you to seek out the Library of Steel, but warns you that a band of Fire-orcs from the depths of Moria have taken control of the library.
Mundgeirr can be found at the Dolven-view camp in Moria.
You should return to Mundeirr to complete the enhancement of your weapon.