Mithril Mine

''Shiny opal is hard to get these days. Some say it isn't even real.'' Mithril Mine is the most expensive mine in the game (excluding Massive Diamond) and is a Divine item (16,000 Research Points!) that produces 34,000$ ore every two seconds. It is 5 x 6 in size and the ore size is 0.8 x 0.8 x 0.8.

Trivia
Mithril is the only ore in the game to not exist.

The description is incorrect. Why is it there again?