The USGS would assay your samples. A relative who worked there once had the job of reporting to a prospector that while his sample was nicely radioactive, the r

The USGS would assay your samples. A relative who worked there once had the job of reporting to a prospector that while his sample was nicely radioactive, the radioactive chemicals did not occur in nature. I think the prospector may then have threatened to complain to his congressman.