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Prospecting & Detecting

12-Year-Old Unearths Large Diamond

It is the eighth largest brown diamond to be found and certified by park staff.

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Hard Rock 101: Advanced Micro Blasting


They… create negligible fumes and much less fly rock than blasting. Below are some tips on maximizing your effectiveness with these tools.

Exceptions to the Rules: Re-Thinking Prospecting Rules of Thumb


Looking at the exceptions to the basic rules is sort of an advanced prospecting discussion, but the readers of ICMJs Prospecting and Mining Journal are plenty able to handle it.

Fountain of Youth Gold


Across and downstream of our operation was a large pile of huge boulders. It was logical to think that water forces may have deposited gold in and around these boulders. We moved our dredge over and started pulling the rock pile apart.

Gold Geochemistry: Where Does Gold Come From?


Prospectors often wonder why gold deposits in veins like it does. Why is one vein rich while another is barren, even though they are only a few hundred feet apart?

The Significance of Nuggets in Placers


Chances are better that both types of gold did not come from the same source. Let's look at the probable conditions to cause two types of gold in a placer.

California: The Land of Big Nuggets—Part I


The nugget sat there in plain sight, though it was covered in dirt, while hundreds of people had passed that way every day.

Decoding Dredge Capacity


Some typical questions that you might consider asking yourself about purchasing a dredge might be…

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The Bawl Mill   • Ask the Experts   • Ask the Experts   • Ask the Experts   • Greenstone and Gold   • The Long Road to Gold Point, Nevada   • What, Where and How for the New Prospector   • Proper Spacing of Placer Sample Sites   • Hunches, Choices and Guesses   • Time for a New Approach: Detecting Float Gold   • Carissa Gold Mine Comes Back to Life   • Gold in Beatty, Nevada   • Cripple Creek Gold Mine Exceeding Expectations   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

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