Hard Rock and Placer Gold of Manhattan, Nevada
October 2019 by Chris Ralph
He found 5 to 7 feet of gravel containing half an ounce per yard. This started a rush of placer activity and several other shafts were sunk, with some large multi-ounce nuggets being found.
It was the middle of winter and the valley was covered in snow, making prospecting a matter of sinking shafts in the ground.
Silver nuggets have been described as “ultra-rare,” “prized” and “unique.” Naturally occurring silver nuggets are rare enough to suggest caution when purchasing. Fakes have reportedly been produced and misrepresented for sale as genuine specimens.
Contacts, faults and zones of weak rock are all places that can act as a pipeline to convey gold-bearing fluids, leading to valuable deposits.
The process of recognizing ores all starts with being able to recognize some basic minerals and knowing what hard rock ore looks like in the districts where you prospect.
While both zinc and lead deposits also are enriched by the surface weathering process, in part two we will look at the enrichment process for copper and also gold deposits, and at the interpretation of leached outcrops to figure how rich the concentrated deposits below them may be.
...if you are out prospecting and find something that looks very much like a nugget but has an odd greenish-gray cast to it, don’t be too quick to simply toss it aside as junk.
It also happens sometimes that glaciers will bury valuable placer deposits. This occurs when the glacier goes over the top of an existing placer deposit.
The Bawl Mill • Ask The Experts - Do you have more info on Silver Peak? • Ask The Experts - Forest Service blocking claim access • Green Valley's Fine Gold Patch • Gold Prospecting for Better or Worse: Powerless • Revisiting Old Haunts • How to Refine Silver—Pt II • Where to Start: Advice for the Beginning Detectorist • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices