Gold Depositiion and Gradients of Placer Streams—Part II
July 2012 by Jim HalloranThe steeper the gradient is, the more potential erosive power to move gold and other bedload sediments, and the more power to remove obstacles to flow.
I didn’t know what to expect because the area we were working was not close to the water, but we were pleasantly surprised when we began to pan out some nice flakes and a few pickers.
• Do as I say, not as I do...
• By the numbers...
Gold is a fairly widespread mineral in the Italian Alps and in the Northern Apennines. It is found both in primary mineralization and in past and recent floods.
Geology is a science of general tendencies with frequent exceptions, not one of hard and fast rules that are always true and never vary. For almost every well-accepted rule of gold deposits, I can point you to a number of important exceptions.
…to see the huge differences between the gold production amounts of the Western States, let’s look at the gold production—both hard rock and placer—of these 13 states up to the present.
For more than 40 years, iron ore prices have been decided by private negotiations conducted between the largest of the iron miners and the largest steel producers. These two sides dominate both the spot and contract iron ore markets.
The Bawl Mill • The Life of an Independent Prospector • Gold in Guyana—Part I: Porknocking on the Puruni River Road • That Something Extra • Prospecting for Copper Ores—Part II • Metallic Trash—Scourge of the Prospector • Gold Mining Boom in the Carolinas • California Suction Dredging Update • Mine, Baby, Mine! • Hecla to Reopen Lucky Friday Mine • Nova Scotia Shows It's Serious About Jobs & Mining • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices