All Articles
Ask the Experts
August 2007 by Staff
Q: Does anyone know of an electrowinning instrument that will plate (heavy plate) rhodium and iridium? I have both in solution. (Solution content = 262.9 oz/ton of iridium; 14.9 oz/ton rhodium.)If I have precious metals in solution in bulk, say 620 to 1,000 gallons, is there a facility to extract the precious metals out? If so, can each be isolated?
Additional articles that might interest you...
Gold at Ponderosa
February 2008
The winter cold and snow bring with it an entirely different approach to prospecting and mining. Northern California was buried with a ferocious storm in late December and early January that knocked out power for many small towns and buried the...
The winter cold and snow bring with it an entirely different approach to prospecting and mining. Northern California was buried with a ferocious storm in late December and early January that knocked out power for many small towns and buried the...
Prospecting Research
August 2013
These are just some of the ways I have been able to find new spots to metal detect for gold.
These are just some of the ways I have been able to find new spots to metal detect for gold.
MMAC & PLP Update
April 2016
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 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.
A True Endangered Species
September 2001
Immediate action is needed. I would like to recommend that Homo sapiens be listed as a “threatened species” under the Endangered Species Act (ESA).
Immediate action is needed. I would like to recommend that Homo sapiens be listed as a “threatened species” under the Endangered Species Act (ESA).
The Golden Days of Julian, California
October 2011
Some scattered reports say that gold may have been washed from streams here as early as the 1840s, but the undisputed major discovery came in 1870.
Some scattered reports say that gold may have been washed from streams here as early as the 1840s, but the undisputed major discovery came in 1870.
Hardrock in Downieville
November 2000
A recent weekend trip found us leaving the Grass Valley, California area to meet up with some friends in Downieville.
A recent weekend trip found us leaving the Grass Valley, California area to meet up with some friends in Downieville.
Rediscovering Placerville, California
February 2011
Several areas came to mind, but each was eliminated for one reason or another. One that seemed to be hanging on was the old historic mining town called Placerville.
Several areas came to mind, but each was eliminated for one reason or another. One that seemed to be hanging on was the old historic mining town called Placerville.
Subscription Required:
The Bawl Mill
• The Basics of Small-Scale Heap Leaching with Cyanide
• Will California Dredging Survive?
• Prospecting For Gold—The Osborne/Herman Hardrock Mine
• Journeys in the Kingman Quadrangle
• From Spanish Mine to Modern-Day Exploration: The Historic Gold-Silver Camp of Palmarejo
• Spanish Police Seize Ship in Treasure Fight
• Looking Back
• Gold Mine Proposed in Jefferson County
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
