The gold contained in these rocks has been dragged into streams to variety alluvial (enjoyment) gold deposits. Reportedly, gold mining in Arizona commenced in 1774, if the Spanish priest Manuel López requested the Papago Indians to scrub gold from gravel to the slopes from the Quijotoa mountains in Pima County. https://silverbullion21747.blogolenta.com/33186133/the-2-minute-rule-for-physical-gold-ownership