Could you tell which dungeons the following ores are in?

Katryx Ore, Silver Ore, Mithril Ore and Coal.

I would like to suggest that you also put this information in the next walktrough update.

Katryx ore can only be obtained when you're far enough in the story line and got the events to get into the dungeon with it.
The Jade Cave in Begus has silver.
Coal is in the Spire of Courage or in dungeons in Dorgania.
Mithril ore in Dorgania. The dungeon in Siriveta is a good place to mine since it has mithril, coal and iron.

Thanks for the informations.

I would also like to report a small bug I found, Maid Vivian doesn't say how many Anubis we have in the Monster Hall.