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.
Breaking cemented gravels
Fascinated by the sapphires—and the gold that occured with them—he was soon buying parcels of property and setting up his own commercial-scale gravel processing plants.
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.
The University of Nevada, Reno Mackay School of Earth Sciences and Engineering, Department of Mining Engineering has begun offering online courses for miners.
• How do I separate silver from lead ore?
The problems of the submersible dredge tube are addressed by the subsurface dredge, where the enclosed sluice recovery tube is suspended from a flotation assembly...
The excavator or backhoe has become the tool of choice for testing placer ground. These machines are the best way to explore and sample a placer deposit if the ground is not too wet or frozen and bedrock is not beyond the reach of the machine.
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