Ask The Experts
August 2016 by Chris RalphWhich comes first, claim filing or staking?
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.
Silver refining has been used from ancient times to change the characteristics of the metal. Early metallurgists refined silver by heating it a couple hundred degrees above its melting point and holding the metal at an elevated temperature for a period of time.
Q: Aside from the softness scratch test and other methods of identification, what feedback would you have on identifying gold in hard rock that may be mixed with other metals that affect its color?
After he excavates the ore down to bedrock, he goes over the bedrock with a metal detector to ensure he didn't leave any gold behind before he backfills the area.
The first step in my recovery process after milling the ore to the desired size is to table it. On this particular ore, I get good results milling it to minus 100 mesh.
• How to find info on a particular mining claim
Once a seam is found it can be traced for miles in either direction. While you are tracing a clay line, you are looking for indicators. The indicators that I look for are ironstone, hematite, different color clays intermingled with the clay line, and a very iron-rich, brown gritty soil.
The Bawl Mill • Legislative and Regulatory Update • Ask The Experts • Revisiting the Rocker Box • Can You Recognize Valuable Ores? • Follow Up to "Just One More Time" • The Highs and Lows of Drywashing • Successful Detecting Requires Attention to Detail—Part I • Panning for Gold on Canyon Creek • China Closing More Than 1,000 Mines • Habits, Procedure, and Where Is The Gold? • Exploring A Historic Lode Mine • Mining Stock Quotes and Mineral & Metal Prices • Melman on Gold & Silver
MMAC & PLP Update