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Detecting Invisible Gold
April 2009 by Chris Ralph
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The technology certainly has improved quite a bit over the years, so when these owners are testing various types of gold on their machines and they find that some gold responds poorly or not at all...
The Rocky Bar Mining District, Idaho
Rocky Bar sits on the north slope of Horse Ranch Mountain, and while the most productive placers were found in Bear Creek below Rocky Bar, most of the creeks on the south, east and north sides of the mountain contain placer gold and were worked commercially in the past.
Selectable Frequency vs Multi Frequency Detectors
I like to think in terms of “conductive mass” because it is a combination of both the conductivity of the metal and the size of the target that determine how a detector sees conductivity.
How to Recognize Hard Rock Gold Ores
I regularly get inquiries along the line of: “Hey, I found this rock, and I think it might be gold ore. How can I tell?” Prospectors are always on the lookout for gold-bearing rocks that may be the source of any nearby placer gold.
The "Madonna Nugget"—A Weekend Hunt to Remember
I worked my way to a flat area along a ridge where I could see a quartz blowout. As I got within 100 feet of it, I started seeing rock that I knew to be associated with gold.
Our Readers Say
This is in response to Norbert Beckstrom’s letter in the November issue of the ICMJ. He wrote in reference to a letter by Jerry Hobbs in the October issue. If anyone opened up a can of worms, it is Mr. Beckstrom.
The Bawl Mill
• War games...
• #%$@*!
• Big hermano is watching...
Dredging Backwards?
Before I tell you what dredging backwards is, I’ll tell you why my team and I decided to give this very unconventional dredging method a try.
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