I wanna be in CALIFORNIA, WAAAAAAHHHHHHHHH!
Well, if you want to talk sheer potential, I did visit Franklin, N.J. It's the mineral mecca of Earth, more individual mineral species there than anywhere.
The dump has been picked over for 50 years but there is always something. I snooped around and found a side road where suddenly there were a bunch of parked cars on the side of the road. Someone had found a newer dump! I was pulling rocks out of there like I couldn't believe, oarnge calcite with Frankinite xtals, flourescent stuff....yeah!
I'll never forget old Charlie. He had worked the mine as a miner all his life and was selling bags of rocks out of his car. He was an old man, but the stories he told be of things he had found while working in a space the size of a bathroom stall blew me away. I remember he told me how he brought out a fragile wonder of needle crystals at "that other mine" <spit> and the foreman confiscated it and just "threw it back in the hole". I can't imagine the hours and days he must have chipped and worked that specimen out of the rock without breaking it!
You want to see some rocks? Go to the Smithsonian in Washington D.C. My my.