Most decent detectors will pick up gold like that if it is in high enough concentration.is there a kind of metal detector that can detect metallic clays & sands ?
e.g. "flour gold" - where the gold particles are tiny, .001 inches for example.
All the detectors seem oriented to finding coins etc.
I'd be happy to find metallic gold on a piece of quartz etc ... or a skull with gold fillings ... but mostly I'd like to find deposits of black sand, flour gold, etc.