Mining Stock Quotes and Mineral & Metal Prices

July 2008 by Staff

Gold in Sonora

December 1999
The state of Sonora, slightly smaller in area than Utah, lies in-northwestern Mexico, adjoining Arizona to the south. It is characterized, on the east, by a high volcanic plateau, the Sierra Madre Occidental, which forms its boundary with Chihuahua.

Shaker Tables for Processing Hard Rock Ores

May 2017

Most placer equipment is really made with gold in the 30 and larger mesh sizes in mind, though if carefully used can often get reasonable recovery down to the 50 mesh size.

Looking Back

July 2008
Excerpts from California Mining Journal, our original title, published 50 years ago this month.

Legislative and Regulatory Update

November 2005
• ESA reform, finally
• BLM finalizes another fee hike

A Few Methods for Sampling Hardrock Deposits

June 2014
With a little homework and a methodical approach to sampling, a prospector can determine if a deposit is worthy of more of an investment...

Spanish Silver in Arizona

October 2001
When Spaniards entered what is now Arizona, they encountered diggings made by Opata Indians. The Opata Indians, who now live and mine in the northeastern part of the state of Sonora, Mexico, were one of the few Indian tribes that was...

Small-Scale Processing of Hard Rock Ores

December 2014
Depending on the ore and if significant sulfides are present, a hard rock miner may be able to get away with simply using a flux to digest the other minerals that may be present.

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The Bawl Mill   • The Lost Silver Triangle of the Sierra Madre—Conclusion: Tayopa, Guaynopa, and Guaynopita   • The Greenwood Gold Project   • Miners Go To Work In Washington   • How To Locate Diamonds   • Natural Crystalline Gold   • The Vore Mine   • Tools of the Modern Prospector: The GPS   • Whitehall Mine Foregoing Closure   • Work Begins At Rock Creek Mine   • Melman on Gold & Silver   • The National Mining Hall of Fame to Induct Four   • Looking Back

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