Welcome to the WMAS/Utahreefs message board Kreedan,
I, like you got the idea not long after I started my first reef aquarium and when we(the club) found that certain rock was ideal because it was ancient LR, the concept snowballed until now it's pretty much legend all around the world. I've had people out of the blue send me money to ship them a bucket of Utah sand and rock or to drive to another state with a pallet of the rock.
Now, even though I moved away, I keep a pile of the highest quality stuff at my Mom's house for people that don't want to go searching for it.