There are many types of iron type rocks that look like meteorites.Here is some tests to try. does it move with a compass? Take a tile that has no varnish like that of the back of a toilet top and scratch it on it a couple of times if it makes any black or reddish Brown colours it is probably Hematite, Iron ore or Basalt like that of volcanic rocks.Meteorites do not leave a scratch mark, also grind a part of it on a grinder to see if it has any metal silver shinny flakes in it.Is it magnetic? These are good indicators that is could be a meteorite.Meteorite have a thin dark egg type crust after comming through the atmosphere ..But some do not and could be every rusty because they can start to rust very fast.some do not....But these are ones that are hardly found around here..northern areas are to damp.Arizona is a great place for hunting rocks they do not rust away very fast.
Go to The Meteorite man.com and he has other information on meteorites.Type in "meteorite information" and it should also take you to a meteorite informational pages.Good Luck!