I quote: <<>Natural, amorphous soils commonly contain significant amounts of iron >(typically 5% If this were true we wouldn't need iron mines and the Mesabi range would be unknown. Try again.>> Just a thought. Perhaps the decimal point is misplaced? Cheers! Jean Olson JOlson8590 at AOL_com Out in the Boonies, near Cambridge, Iowa PS. The Mesabi is just a HUGE hole in the ground now.