How To
Enrichment of Mineral Deposits by Weathering—Part I
March 2016 by Chris Ralph
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.
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• How do I separate silver from lead ore?
Exploring Placers with Auger Drills
Augers can be used effectively for placer exploration with certain limitations.
Using Favorable Rock Types to Find More Gold
The more experienced prospectors know these lesser known spots are the types of places where big finds are still made.
Alternative Gold Leaching Methods
The ideal leaching chemical would leave behind what we don't want or need in the ore and take only the valuable metals.
Reading A River: Understanding Erosion and Gold
Rivers are not just random and accidental; streams and other drainages are what they are because of the forces of erosion acting on the bedrock.
Sampling for Success—Part I
All these decisions and more depend on the richness of a claim—something that is determined by sampling. But sampling isn’t cheap, and even collecting the samples can be more difficult than it appears on the surface.
The Smell of Gold—Part I
Some claim they can smell gold. This may be, but when I take a whiff of gold, I smell dirt, rotten eggs, garlic or just nothing: my nose is everything but sensitive.
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