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Cobalt and Nickel in Missouri

Cobalt and nickel are tough silver-white metals, with similar physical properties, that frequently occur together in nature, along with copper sulfides. Cobalt and nickel are used as alloys, providing great strength and resistance...

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Metal Detector Only Requirement for Hunting Treasure


In 1977, Mary Lee Bunch bought her husband a Christmas gift she joked would "keep him off the streets." Sure, Milton Bunch is off the streets. But now you can't keep him off the roadsides...

Ask The Experts—What minerals are magnetic? Can rare earth magnets capture platinum?


What minerals are magnetic? I have heard that super magnets (rare earth magnets) can capture platinum. True?

Detecting in Australia's Etheridge Goldfield


This remote goldfield covers an area of over 13,000 square miles of the Savanna Gulf country of Far North Queensland, Australia.

Quartz and Chalcedony in Wyoming


Quartz is a common rock-forming mineral found in many shapes, forms, and colors.

Cerro Colorado Silver, Arizona


It was the first mine developed by Americans in the Cadsden Purchase of 1853. A number of small near-surface mines had been operated by Spaniards and Mexicans in the region prior to the arrival of Americans, going back as far as 1740.

How to Make a Rock Sled for Dredging


When my “anonymous” friend told me the rock tub was probably a hundred miles from where he safely stashed it, I decided to build another sled and improve on my old design.

The Birimian Greenstone Belts of West Africa


A few years ago I had a tremendous opportunity to visit Australia and hunt for gold there. The geology of the gold deposits there was somewhat different from what I was used to here in the US. I learned a lot about greenstone belt gold deposits while prospecting them in person, and it was an amazing trip.

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