Spectra from that area seems to be Thorium-232? Thallium-208 is a decay product of it. It's not as conclusive as when I was able to detect Radium 226.

The rock definitely looked like granite to me, it had a lot of what looked to be large mica flakes, and a lot of salmon colored chunks as well, though I've seen that in different areas before. At times equal amounts of white, black, and salmon coloring.

@nighthiker