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.
Perhaps the most notable thing about skim placers is that they form on the top surface of gravel bars, as opposed to coarser gold placers where the weight of the gold particles allows the gold to settle down on or near bedrock.
For this article, I am focusing on industrial production plants that can handle 10 cubic yards per hour or more and would be fed by a loader or other heavy equipment...
Wouldn’t it be great if you could know if there is gold in the ground without setting foot on the ground? Well you can, to a certain extent, if you can recognize mined ground from unmined.
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 ideal leaching chemical would leave behind what we don't want or need in the ore and take only the valuable metals.
Q: I am looking for a “trommel machine” that doesn’t separate anything but clay slurry from rock hard clay.
His brother’s friend showed him a vial of gold that originated from his family’s mine in Honduras. Within two weeks Ernie had flown to Honduras to get a first-hand tour of the historic mine and the primitive operation underway to recover the gold.
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