Ask The Experts: How do I identify gold in hard rock that may be mixed with other metals?
September 2016 by Chris Ralph
Q: Aside from the softness scratch test and other methods of identification, what feedback would you have on identifying gold in hard rock that may be mixed with other metals that affect its color?
Most prospectors understand placer mining a lot better than hard rock mining and don’t realize the amount of work that goes into processing different types of hard rock ore.
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...
Science has shown, over the past few centuries, that there is a direct correlation between certain plants and their geophysical surroundings.
The high price of gold and the poor economic conditions here in the US have created an unusual situation—a large number of folks are thinking seriously about getting into prospecting and digging for gold on a full-time basis.
Even though they have put down thousands of dollars, the buyers often stop paying on their claims part way through the process after they realize they’ve been duped, but the company just sells it again to another buyer.
After he excavates the ore down to bedrock, he goes over the bedrock with a metal detector to ensure he didn't leave any gold behind before he backfills the area.
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 Bawl Mill • Our Readers Say • Ask The Experts: Is there a safe DIY alternative to cyanide or mercury for extraction? • Ask The Experts: Should I take my claim access problems to the Desert Advisory Council? • Ask The Experts • Ask The Experts • Legislative and Regulatory Update • Pickers and Nuggets • Modern-Day Claim Jumping • Oregon's Waldo and Galice Mining Districts Unite • Attention to Detail - Part II • The Seven Troughs Mining District • CA Supreme Court Rules Against Rinehart - But There Is A Solution • Summertime Gold Panning • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices
MMAC & PLP Update