When I was a wee bit younger and dumber, I went along with another twit to some expired Mine Shafts near Eaton Canyon (north of Altadena, top of Lake St,--old Mt. Wilson Road area in the latter 70s) to "discover" much Gold Flake, except of course to be informed by other would be Panners/Hikers that we had stumbled upon a large cache of PYRITE or FOOLS GOLD.
4+ hours wasted gathering two gallon containers of sand, but we did have a good hike both ways, so it wasn't entirely a lost day.
THERE IS NO RELIGION HIGHER THAN TRUTH!!
All Women are Ladies till They Prove otherwise!!