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The Basics of Geophysical Exploration

In developing a mineral property or mining claims, one of the first goals is to identify and quantify valuable deposits. The classic method of doing this is by drilling holes into the ground to sample what is below the surface. The problem is that one or two holes usually are not going to tell you a whole lot...

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• Two questions: Is fool's gold magnetic? And how do you go about filing a miing claim?

Enrichment of Mineral Deposits by Weathering—Part I


The exact minerals formed in the concentrated supergene deposits depends much on the type of country rock around the deposit and the chemistry of the deposit itself, but if conditions are right, this process will form some rich patches of bonanza ore, in some places valued at thousands of dollars to the ton.

Small-Scale Hard Rock Mining With Water Recycling


Once I have established the presence of gold in the sample, I collect five-gallon bucket quantities of the rock material for processing back at my shop.

The Basics of Crushing and Milling Operations


In processing gold, silver and other valuable ores, the minerals containing the values, such as metallic gold, silver-bearing sulfides or other minerals, must be freed from the surrounding host rock before those valuable minerals can be captured.

Pocket Gold


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.

How to Refine Silver—Pt I


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.

Proper Placer Sample Processing


...your sampling procedures should not be designed to catch gold your mining technique will never recover.

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The Bawl Mill   • Ask the Experts - ...Worth further investigation?   • Ask the Experts - Processing sulfide ore without mercury or cyanide.   • Regarding "Good Assays and Bad"   • New "Employment" Category   • 4 Keys to Successful Nugget Hunting   • A High Price to Pay   • Eolian Placer Gold   • All the Gold Ever Mined...   • Targeted for a Tax Audit   • Feds Order Closure of Idaho Mine   • Trying Out the New Highbanker   • A Gold Mine on a Washington Beach?   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices

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