Looking Back

March 2000 by Staff

Breccia Pipes

December 2001
A breccia pipe, or chimney, is an irregular cylindrical mass of breccia that is often silicified and stands out as an iron-stained knob. They can be from a few feet to several hundred feet in diameter, and may or may not be mineralized.

Putting Together A Small Free Gold Mill

May 2018

Most small-scale miners want to know how they can set up a system much more cheaply. The difficulty is in the balance of putting together a decent small-scale system at a reasonable cost.

Nuggetshooting Eluvial Placers in the Western United States

August 2000
The future is still good for anyone wishing to use a metal detector to nuggetshoot residual and hillside eluvial placers. Since these placers are easily overlooked, the key to opening the door marked "success" is the willingness to do research.

Beyond The End of The Road

November 2008
Dale's research of known gold producing districts in southern California and his knowledge of metal detecting produced these large gold-quartz specimens. This certainly would make any trip a very good one, but it turned out to be just the...

Australia Produces World's Largest Gold Coin

March 2012
Australia’s Perth Mint currently holds the record for the world’s largest gold coin.

Prospecting With a Magnetometer

December 1999
Swedes were the first to note variations in the Earth's magnetic field, circa 1640, and they were the first to use the dip needle. They made the first magnetometer in 1870.

Massive Sulfide Deposits in Oregon

October 2000
This article deals with massive sulfide deposits in the Klamath Mountains of southwestern Oregon, but it applies to massive sulfides found in California as well.

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