Not granite(?), but what’s found within granite… Quartz, feldspar, magnetite, etc. BLT Research on magnetite sphere concentrations (10-500x higher than normal) found around cattle mutilations & crop circle formations. Dr. Bruce Cornet  did a geomagnetic reading series on the UFO hot spot of Pine Bush, NY and confirmed that granite was the common rock in the area.  In that particular case there were UFO's/AOP's appearing to fly straight into the ground, indicating that something more was going on.