Prospecting & Detecting
Confluence Placers
June 2013 by Jim Halloran

Sierra County Gold—Part II

Residual Placers: An Often Overlooked Gold Source
Because the forces of erosion and gravity tend to carry lighter materials like quartz away more easily, the heavy minerals like gold or silver will tend to be concentrated in the general area around the vein outcrop. These concentrations are what make residual placers so attractive.
The Birthday Nugget Patch
Down around 10 or 12 inches I hit a large cobble that appeared to be one type of hot rock for this area. I thought bad things about the new technology until I checked the rock.
Successful Detecting Requires Attention to Detail—Part I

The Hunt for Remote Canyon Gold

Prospecting Underground: Use Caution
In underground placer work, the contact point of the bedrock tunnel and the gravel is a very weak point and always has to be timbered. The bedrock here is thin, fractured, and the gravels loose from many years of oxidizing.
Dry Washer, Wet System or Metal Detector?

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