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.
When my “anonymous” friend told me the rock tub was probably a hundred miles from where he safely stashed it, I decided to build another sled and improve on my old design.
Centrifugal bowls are very efficient, and with proper operation they can consistently achieve gold recoveries above 95% with gold of about 50 mesh size.
I knew the nuggets got into the nugget patch somehow, I just had to figure out how and from what direction they came.
...most prospectors don't even think about the conductivity of minerals, but there are some that do conduct electricity to a certain degree, so metal detectors will respond to them.
The metal is expensive, not because it is rare but because of the expense to produce and work it. The minerals mined for titanium are all oxides, unlike many base metals that are mostly mined as sulfide minerals.
This project taught me that you don’t need to be Albert Einstein to apply a little science to your prospecting. I learned that most of the science related to suction dredging is actually common sense. All we need to do is take the time to apply it.
It all started with a phone call from my friend and prospecting partner Pat Keene. He told me that he knew of an investor who was just starting out in the gold industry and was looking for a gold consultant to go to Africa to prospect and analyze a 400 sq. mile concession in the middle of the Congo rainforest. I waited for the “just kidding” line...
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