Simple Sluice Design
October 2002 by Michael S. MurrayOne of the first pieces of prospecting equipment I acquired was a really nice little aluminum backpack sluice. I’ve used it for some time now and have always been impressed with how well it works for keeping the fine wire gold. But ever since I got on the Internet and started looking around for prospecting stuff, I have been toying with the idea of making a flexible conduit sluice.
As we approached the river the view was outstanding and the sight was encouraging. A ravine coming down on the right side had been worked heavily, with rock piled back on each side. That surely meant there was gold somewhere close.
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The ideal leaching chemical would leave behind what we don't want or need in the ore and take only the valuable metals.
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The other distinguishing feature of calcite has to do with its chemistry. Geologists sometimes take a small bottle of dilute hydrochloric acid out into the field with them because calcite reacts with acids to make a bubbly foam.
The holes were overloaded with explosives, but I didn’t know it. I was just a green mining engineer fresh out of school and told to watch as the experienced miners set the charge.
My wife Ann and I moved three years ago to the Pueblo of Arivechi, Sonora, in order to be near the mining concessions we owned and to build a precious metals concentrating mill.
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