Gold in Guyana—Part II: Process Optimization at Sacre Coeur Minerals' Lower Puruni Alluvial Mining Project
August 2012 by Carl BrinkIn Part Two of my two-part series I describe the mechanized alluvial gold mining operation on the lower Puruni River launched by Sacre Coeur Minerals in 2011.
“The evidence is clear—mineral deposits alone are not enough to attract precious commodity investment dollars...”
Each specimen is carefully examined to determine if it would be beneficial or not to use an acid treatment to reveal more of the gold.
...your sampling procedures should not be designed to catch gold your mining technique will never recover.
An online video gave me some ideas, and with a lot of trial and error I developed a reliable method of panning free gold particles down below 35 microns quickly and easily.
Chances are better that both types of gold did not come from the same source. Let's look at the probable conditions to cause two types of gold in a placer.
With eight loads processed, a pumpkin-size rock fell into the hopper, stopping the whole operation until I could lift it out.
In an old mine that does not have stopes, you know the old miners did not take much if any ore out of that excavation. On the other hand, if you see large stopes within the mine you know that it is these places where the miners found profitable ore deposits within the vein.
The Bawl Mill • Ask the Experts: Something for everyone... • Ask the Experts: VMS ore • Ask the Experts: More suggestions for dealing with metallic trash.... • Ask the Experts: various mining courses • Sniping for Gold • Following Clues to an Old Mill and Vein Strike • Small-Scale Miners Rock the Mining World • Big Rock Gold • Still Gold in Humbug, Arizona • Never Take Safety for Granted • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices