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VMS Deposits in Central Arizona

Volcanogenic Massive Sulfide (VMS) deposits in the Central Arizona Precambrian volcanic belt occur within a felsic package of volcanic rocks capped by an exhalite unit comprised of cherts, iron formations and siliceous members.

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Ask The Experts: How to handle gold in cyanide; how to sample a platinum deposit


Is there a method which can be done safely to get the metals to drop out of the cyanide solution? What is the best way to learn how to evaluate the potential of this serpentine platinum deposit potential?

Looking Back


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

The Bawl Mill


• Taxpayers taken for a “ride”
• Fellow Congressmen, lend me your earmarks...

Gold Prospecting on the East Fork River, Alaska (Part III—Conclusion)


In this trip, Riley came along with Jay, and Harold came down later. We brought a six-inch dredge down to the creek. We had hoped to use it, but we didn’t.

Legislative and Regulatory Update


• California suction dredging regulations
• Draft Coho recovery plan for Southern Oregon, Northern California
• Sage-grouse

Pros and Cons of Big Detector Coils


Years later I returned with a new detector with a smaller coil and detector technology more sensitive to smaller nuggets. I found my first nugget within five minutes. I had a second five minutes after that.

Company Notes


• CoreMarkets.com
• Canyon Resources Corp.
• X-Cal Resources
• Homestake Mining Company
• Pan American Silver Corp.

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The Bawl Mill   • Update: Forest Service Interim Rule   • The Guyana Highlands   • Prospecting with a VLF-Type Gold Detector   • Freegold Ventures' Golden Summit Project   • Picks & Pans: Working the Crevices   • Molybdenum   • 2004 California State Gold Panning Championships   • Company Notes   • Why Environmental Groups Prefer Kerry   • The French Mines of El Boleo   • Looking Back   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

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