Alternate Iron ores?

[Antichrist_Online]

How about adding other iron ores than hematite with different iron extract values. For example Iron Pyrite would have more iron and magnatite would have less (but become useful later for making magnets). I'm only talking about a 15% change with the same collection rates, so to rebalance the ecconomy shift caused by the removal of pure iron. (older players sudenly more wealthy without in-game reasoning).