Was there Mithril in Numenor? It says that only Khazad-dum possessd Mithril in Middle-earth but as Numenor is no more part of Middle-earth than Valinor is then would Mithril be found there?
There are indications that mithril was also found in Aman and Numenor, that is certain. And also we know the Numeroneans used mithril very much, King Tar-Telemmaitë became so greedy for mithril that it gave him his name - Telemmaitë means 'silverhand'. The best indication is note nr 31 in The Silmarillion, as we are told: For that metal was found in Númenor. [Author's note.] – In "The Line of Elros" (p.232) Tar-Telemmaitë, the fifteenth Ruler of Númenor, is said to have been called so (i.e. "silver-handed") because of his love of silver, "and he bade his servants to seek ever for mithril." But Gandalf said that mithril was found in Moria "alone in the world" (The Fellowship of the Ring II 4). But if we think about it it all makes a lot of sense. Gandalf said that at the end of the Third Age, when Numenor was long gone under the sea, so we don't need to think Gandalf was wrong, he just reffered to the fact that the mithril in Numenor was all long gone. And about Aman, well as we know it was no longer part of "the world" as it was moved by the Valar away from the reach of men.
no problem...also I would like to add that there might again have been also other hidden mithril deposits deep below the earth, but of course these are the only ones we know about
'They came here because of Mithril,' said Gandalf. 'It was for that that Moria was of old chiefly renowned, and it was the foundation of the wealth and power of Durin: only in Moria was mithril found save rarely and scantily. Moria-silver or true-silver some have called it. Mithril was the Elvish name: the dwarves have a name which they will not tell. Its value was thrice that of gold, and now is beyond price. It was nearly as heavy as lead, malleable as copper, but the dwarves could by some secret of theirs make it as hard as [> harder than] steel. It surpassed common silver in all save beauty, and even in that it is its equal. [Added: It was used by the Elves who dearly loved it - among many other things they [?wrought] it to make ithildin.
Also perhaps to be placed here: ... the dwarflords of Khazad-dum were wealthier than any of the Kings of Men, and the traffic to the Gates brought them jewels and treasure from many lands of East and West.) Bilbo had a corslet of mithril-rings that Thorin gave him. I wonder what he did with it. I never told him, but its worth was greater than the value of the Shire and everything in it.'(14)"
(The treason of Isengard)
I thought this was a quote of importance. Note the bolded part. Although Moria was its true origin it could be found in small amounts in other places.
there is no origin for mithril it is a metal and as all other metals it is found in the earth. the fact it was found in Moria is because the Dwarves dug very deep to find it but Moria was by far not the only place for mithril and I would not say small ammounts in other place as the Numernoneans had it, and we are not told that only in small ammount