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Prospecting for Silver With a Geiger Counter

Light-colored volcanic tuff or tuffaceous sandstone often contains small amounts of uranium, enough to be detected with a sensitive radiation detector. Sometimes, the mass effect of the radiation is substantial.

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Over the Divide


Gordon Burton
1935 - 2013

Legislative and Regulatory Update


• Endangered Species Act update
• California Fish & Game tries yet another route to stop gold dredgers

An Expensive Lesson


Alaska is a land of extremes and the weather is no exception. By the time we reached the mighty Yukon River we could see a dark line of clouds stretching from east to west as far as the eye could see.

Ask The Experts - How do I sell my gold?


Dredge Mining—Current Situation in Idaho


Tomten concedes the scenario of federal environmental agents swooping in on river dredges near historic mining towns like Idaho City, Rocky Bar or Placerville remains unlikely.

The Guyana Highlands


The Guyana Highlands referred to here are a tropical upland area that extends from French Guiana on the east to Colombia on the west, with elevations reaching 9,219 feet. It occupies a vast and remote region between the Orinoco River on the north and the Amazon River on the south. There are mountains, tablelands, mesas, and swamps, largely impassable to those on foot.

Looking Back


Excerpts from California Mining Journal, our original title, published 50 years ago this month.

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The Bawl Mill   • Over the Divide   • Our Readers Say   • Special Editorial: Gold Anti-Trust Action Committee Believes They Have the Evidence   • World Gold Council News   • Metal Detecting Within the Cordillera for Gold Placers Associated With Tertiary Epithermal Ore Deposits   • Picks & Pans: An Exciting Hobby   • The Furnace Atmosphere During the Fire Assay   • The Hanging Tree   • Gold in Chihuahua, Mexico   • ICMJ 10th Annual Photo Contest Results   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices   • Looking Back

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