Does anyone know of a method that can be used to separate a mixture (solids in powdered form) of Fe{2+} and Mn{2+}. I can find many ways for the other ions, but none for these two?

It's tricky to separate them as the 2+ ions, but if you add H2O2 and HCl you will convert the Fe(2+) to Fe(3+) which forms a complex with the HCl and you can extract it into ether.

In practical terms, be careful to make sure that the solution you are extracting isn't full of Cl2 or H2O2 by boiling it .

 

 

Other approaches are available. Which one you choose depends on why you want to separate them.

I believe NurdRage has a few videos you may want to peruse. Failing that, oxalic acid complexing with iron(II) might do the trick.