Straight from the game's own files
Guide
Ore
Level 1 · STR 10 · DEX 10 · INT 10
Found in: Eslanian NE, Eslanian NW, Eslanian SW, Limbo NE, Limbo NW, Limbo SE, Drobeta NE, Drobeta NW, Drobeta SE, Drobeta SW, Rodin NE, Rodin NW, Rodin SE, Rodin SW, Timore NE, Timore SE, Timore SW, Adam Holyland E, Castalo NE, Undergrd. Waterways, Eslanian Dungeon, Bathory Dungeon B2, Ghorgova Oubliette, Rasen Castle 2F, Raohm Dungeon B2
What Slayers find
Nothing.
What Vampires find
Nothing.
Chances are worked out from the game's own treasure lists and count a plain item of that kind; items with bonuses are part of the same chance.