Enrichment of Mineral Deposits by Weathering—Part I
March 2016 by Chris RalphThe 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.
• How do I separate silver from lead ore?
Augers can be used effectively for placer exploration with certain limitations.
The more experienced prospectors know these lesser known spots are the types of places where big finds are still made.
The ideal leaching chemical would leave behind what we don't want or need in the ore and take only the valuable metals.
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.
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.
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.
The Bawl Mill • Legislative and Regulatory Update • Ask The Experts • Ask The Experts • Ask The Experts • How to Stake Your Own Mining Claims—Part I • Addressing EPA Overreach: What Dredgers Need to Know • Green Valley Gold District, Payson, Arizona • Nevada's Silver City Gold District—Part I • Alaska: Kodiak Islands Mineral Resources • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices