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Basic Geology for the Independent Miner—Part II Recognizing and Understanding Rock Formations (Petrology)

Rocks are an aggregate formed from the accumulation of minerals. Minerals form under various conditions, and when the minerals come together in mass, they form rocks.

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Looking Back


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

Western Mining Artifact Collectors Show


A year of work and preparation has come and gone as the Western Mining Artifact Show was held this past June 29th at the Miners Foundry in Nevada City, California. It was three days of fun and adventure delighting in the glory of the golden days of California gold mining of long ago.

Mineralized Calderas in Colorado


A caldera is a large circular volcanic depression caused by collapse due to the removal of molten magma from an underlying magma chamber. The removal of magma is due to explosive venting of lava and pyroclastic material.

The Stonewall Jackson Mine, San Diego County, California


For obvious reasons southern California is not known historically for its gold mines. Gold production was concentrated heavily in the Sierra Nevada foothills in the northern part of the state. However, the high mountainous region of eastern San Diego County was the site of a number of productive hardrock gold mines, notably in the late 19th century.

Over the Divide


Ron Stockman
  1939—2003

MMAC & PLP Update


The legislators soon came to the realization that Mining Districts and our proposed bill can solve many of the problems they currently face in their home states.

The Life of an Independent Prospector


“JP, is it possible to make a living looking for gold with a metal detector?” I get asked this question a lot...

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The Bawl Mill   • January Issues Delayed For Weeks As USPS Searches Their Facility   • The Rocks That Burn: Is Oil Shale the Answer?—Part I   • Feds Move Oil Shale to Front Burner   • The Circle Goldfields   • New Montana Board Moves to Halt Mining   • Newmont Looks to Ghana   • PLP President Intervenes on Behalf of Dredgers   • Samuel Franklin Hunt Nevada’s “Rio Tinto”   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

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