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Highbanking and the House Rock
June 2010 by Tom Leftwich
I hit bedrock at two feet and followed it down as it appeared that I was on the edge of a rib that ran with the river. This was beginning to look very promising and I was seeing some small gold—pieces and flakes—in the header of my sluice box.Over The Divide: Jim Straight, 1930-2019
The Bawl Mill
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Diamond Dealer Prevails in Congo
The one he’s rolling around in his fingers is nice—5.23 carats, nearly the size of a marble, pure and white. But the diamond that Alphonse Ngoyi Kasanji is talking about is the big one—the one that got taken away.
My Lucky Thirteen Nuggets
Even with my favorite top-of-the-line gold detector there were several false digs. Many of the hot rocks gave a solid signal that was too much like a nugget to ignore. After trying several tests I just dug everything because it is better to be safe than leave a big, deep nugget for a more diligent gold hunter.
The Basics of Small-Scale Heap Leaching with Cyanide
In last month’s article I talked a bit about opportunities for heap leaching small hardrock deposits. This month I’m going to talk about the basics of putting together a heap leach project, including building the pad and leaching the ore.
Cedar Rim Opal—Discovery of a Giant Opal Field
In 2003, I initiated field reconnaissance of an opal deposit at Cedar Rim in central Wyoming and was amazed at the size of this undocumented deposit located right in the middle of an oil and gas field...
Gold Depositiion and Gradients of Placer Streams—Part II
The steeper the gradient is, the more potential erosive power to move gold and other bedload sediments, and the more power to remove obstacles to flow.
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