How To
Hand Panning Micro-Fine Gold
May 2017 by Keith Bowen
Once you get down to the black sands or a few tablespoons of material, the technique changes dramatically.
Iron Minerals, Your Detector and Gold
It’s worthwhile for the prospector using a metal detector to know a little bit more about the association of iron and gold as well as how iron minerals affect your metal detector.
Ask the Experts
• How do I clean up gold encrusted with iron-sulfides?
Lode or Placer: What Difference Does It Make?
This explains the large difference in particle sizes between placers and hydrothermal lode deposits, but also means that while the mining may be similar in some cases, the sampling and recovery techniques are usually quite different.
The Fire Assay of Carbon
Carbon, activated charcoal, or “char,” as some old timers refer to it, can be an assayer’s nightmare.
Ask The Experts
• Determining the amount of gold in a specimen
A New Method for Handling Stubborn Gravity Middlings
The solution focused on the relative difference in malleability between gold and waste, rather than the difference in density exploited by gravity circuits.
A Few Methods for Sampling Hardrock Deposits
With a little homework and a methodical approach to sampling, a prospector can determine if a deposit is worthy of more of an investment...
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The Bawl Mill
• Legislative and Regulatory Update
• Ask The Experts: How many claims can I file in Arizona?
• Ask The Experts: What should I do with a large amount of old placer concentrates?
• Shaker Tables for Processing Hard Rock Ores
• Becoming a Successful Detectorist
• Sampling, Hydro-Shocking & Cleaning Quartz-Gold Specimens
• My Lucky Thirteen Nuggets
• Crushing, Grinding and Pulverizing
• A Break in the Weather
• From the Editor
• Prospecting Knowledge -- Pass It On!
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Over The Divide: Miles John Mitchell
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