Iowa Hill District
June 2012 by Chris RalphFor the last two years we’ve held a hands-on prospectors training session in the Iowa Hill district of California’s Mother Lode country as a part of our Gold Prospecting and Mining Summit event. Because of this, I thought it might be good to take a look at the history, geology and opportunities that the Iowa Hill district still offers to the individual prospector.
While the bullion value of the nugget is already substantial, the size and rarity of the Ausrox Nugget combine to make its worth invaluable in the collector market.
• Drones for the independent prospector
The burning question I needed answered was why didn’t the deposit ever get mined of at least one of the valuable minerals? A couple of reasons have come to light.
Pumps can be set up quite a distance away horizontally from the sluice, even hundreds of feet. It will work so long as there is sufficient water at the source where the pump is located. Vertical distance is more of a problem than horizontal distance; 30 to 40 feet is the maximum vertical climb for most pumps.
Ultraviolet light is divided into three levels, labeled A, B and C depending on the wavelength, with C having the shortest wavelength and the most energy.
Working underwater certainly has its challenges, but since I wanted to learn how to blast underwater, I just needed to dive in headfirst and take charge of the operation.
The Bawl Mill • Our Readers Say • Gold Deposition and Gradients of Placer Streams—Part I • Pursuing Rare Earths in Wyoming • The Mole • Prospecting for Copper Ores—Part I • Repair / Replace Tax Rule Changes • The Wisdom of Mark Twain—And Tales of Cheating the Unwary Prospector • Colorado Mining Association Appeals Roadless Ruling • Ganes Creek Hits 10 Years—Part II • Fifteen and Counting • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices