Have I found a meteorite?

Since meteorites are rare and there are several materials that are often mistaken for meteorites, please explore the meteorite identification links below before contacting the museum with this request.

New England Meteoritical Services	http://www.meteorlab.com/
Smithsonian National Museum of Natural History	http://mineralsciences.si.edu/collections/meteorites.htm
American Museum of Natural History- New York	http://www.amnh.org/exhibitions/permanent/meteorites/what/looklike.php
The Field Museum	http://meteorites.fieldmuseum.org/node/34
Natural History Museum, London	http://www.nhm.ac.uk/nature-online/space/meteorites-dust/collecting-identifying-meteorites/identifying-meteorites/index.html