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The Lost Silver Triangle of the Sierra Madre—Part II

Newspaper stories in the spring of 1887 credited Lieutenant Henry O. Flipper with discovering both the long-lost Guaynopa and Tayopa mines. Flipper was in Mexico City in late April and May and a reporter interviewed him.

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From the Editor


You will find a few articles in this issue that you wouldn’t normally expect to see in the Journal. Don’t fret—we’re not changing our focus, but the time seemed right to address a few pressing topics.

Green Valley's Fine Gold Patch


Once across, I panned a couple of spots around some old grass roots and the fine gold was amazingly heavy. Every pan I ran after that had lots of color.

Mining Stock Quotes and Mineral & Metal Prices


Looking Back


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

Gold Tellurides: Tellurium, an Assay Impurity


What is a gold telluride? Simply put, it is a chemical combination of gold, silver and tellurium...

Happy Birthday, ICMJ!


Looking Back


Excerpts from CMJ published 50 years ago this month.

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The Bawl Mill   • Ask the Experts—Why doesn't the 1872 Mining Law apply to all 50 states?   • Ask The Experts—Where do I find information about getting paid for raw gold?   • Understanding Geologic Deposit Models   • Prospecting for Diamonds   • Avino’s Durango Project   • Success With A Detector   • Horsetail Gold   • The Makorakoza of Zimbabwe—Centuries of Prospecting in Gold-Hosting Dolerites   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

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