I found it! I really found it! Raw, untainted samples of that same, mysterious ore from the sanctuary!
That fearsome beast must have been guarding it. Thank the heavens for Timur and his berserk savagery! When he leapt from the back of his wyvern, I thought he was surely doomed, but the madman actually managed to grab hold of that monster's horns and turn its eyes into a bloody mess. I have never seen such brutally effective barbarism.
Many of his band did not survive the encounter of course, but that was to be expected. Progress requires sacrifice, and whether those brutes knew it or not, their deaths have helped humanity leap into the future.