Proper Assaying of Placer Samples
November 2012 by Jim HalloranThe whole purpose of sampling mineralized ground is to measure the values in a small volume of material that would be representative of a much larger volume of similar material. The key word is representative. Chemical and fire assaying will not accurately represent placer deposits by themselves.
Normally the detector he was using would sound off with a definitive high-to-low tone when passed over a piece of gold, which distinguished the gold from the many high iron content "hot rocks," but this one was different...
Once you have a detector, learn how to use it and get out in the field—you can’t find anything with it in your garage.
When I teach people about finding gold, I often explain that it is helpful to think of any river or stream that carries gold as being something like a sluice box.
In Chicken I had my first experience with the famous Alaska blue clay, sometimes called the blue layer. The blue layer is where the best fine gold was to be found.
Take a look at the picture—it’s pretty simple and you can build it yourself.
After getting all the gear together we headed up the old road that led us to an old ground sluice site. George and Kaleb were using lightweight VLF (very low frequency) detectors. I carried a newer technology unit that is just a tad coil-heavy in the front.
Gold mining has received many black eyes from many scams, scammers and schemes throughout the years. Unscrupulous scammers have swindled naive people for millions of dollars in the past and will, no doubt, continue into the future.
The Bawl Mill • Ask the Experts • Ask the Experts • Ask the Experts • Ask the Experts • The Portable XRF Gun • Gold Dredging on Oregon's South Umpqua • The Struggle to Reopen Alaska's Largest Gold Mine • Prospecting With a Detector: Lessons Learned • The Rush to Treasure Hill • Tips on Crevicing for Gold • Using Google Earth and Other Maps • Mining, Health Care & Taxes • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices