In First Age 499, Húrin Thalion, who had seen all that had happened to Túrin with Morgoth's eyes, came across Mîm in Nargothrond, and killed him, deeming him partially responsible for Túrin's fate. With his dying words Mîm cursed the treasure. Húrin's band brought the treasure of Nargothrond to Doriath, where eventually the gold was a reason for the Sack of Doriath and the death of Thingol.
This is from TBLOTII, isn't it? Or comes it also in one of the latter versions of the Sil. I can't remember I ever readed this in the Sil,--22.214.171.124 15:05, 30 November 2009 (UTC)