The Field Museum does not provide an ID request service anymore. However, we invite you to visit the Field Museum during a future ID day (date TBD) when these become available again, where you can bring in one specimen for us to look at.
New: Don't use a magnet as this destroys much of the preserved natural magnetism in meteorites. This would compromise the use for science.
Sites of interest for meteorite IDs are:
Arizona State University:
Washington University: https://sites.wustl.edu/meteoritesite/