According to the US Geological Survey folks, to ID your rock sample, you might try your state geological survey (see below), a natural science museum, or a college or university with a geology department.
You can find your state geological survey contact information here:
According to the US Geological Survey folks, to ID your rock sample, you might try your state geological survey (see below), a natural science museum, or a college or university with a geology department.
You can find your state geological survey contact information here:
https://www.stategeologists.org/surveys
Here are a few ID guidelines from the USGS if you think you may have found a meteorite.
https://www.usgs.gov/faqs/i-think-i-found-meteorite-how-can-i-tell-sure
Hope this helps!