I'm not saying that you don't have a meteorite, but from what I read about people thinking they have one and how rare they are don't get your hopes up too soon.
I found several "heavier than normal" rocks in my yard that looked liked they could be meteorites, even a magnet was attracted to it, but after emailing pictures to several places that study meteorites no one sent any positive replies, they basically said they didn't think so.
Here are a few web sites that can be of help, and I really do hope you do have a real meteorite though, that would be neat !
My brother and I have taken rocks that we thought might something to 6 different people, and nobody agreed on what to call them. So we had 6 opinions of what they were.