Halloqueen
"Yoko has returned, they cry."
I might be wrong but I feel like, assuming you broke the ore rock the day prior (and even if not, I think it changes daily), you could just time travel back to 5:55 AM or something similarly close to 6 AM (when the new day starts), save and quit, wait out however many minutes you need until 6 AM, then resume plot resetting. If I'm not wrong, this would hopefully make the rock spawn in a different location. This is probably too late to be of any use, but it's worth a shot.