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Picks & Pans: Prospecting for Lode Gold
October 1999 by Edgar B. Heylmun, PhD
Most of the world's ore deposits have been found by prospectors, not by geologists nor mining engineers. This article has been prepared with this fact in mind.
Spanish Silver in Arizona
When Spaniards entered what is now Arizona, they encountered diggings made by Opata Indians. The Opata Indians, who now live and mine in the northeastern part of the state of Sonora, Mexico, were one of the few Indian tribes that was...
San Francisco Mint and US Gold Reserves
In 1717, Sir Isaac Newton, Master of the British Mint, established a fixed price for gold that was equivalent to around US$20.00 per ounce. This price was for bullion gold, refined to a purity of twenty-two karats (.917 fine).
Gold in Guatemala
The Central American nation of Guatemala is better known for civil unrest, earthquakes, and volcanic eruptions than it is for gold. However, there is gold in the country, and there are undoubtedly many undiscovered deposits in the jungles and rainforests.
That First Nugget
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.
Ask the Experts
What is the ceramic-like material embedded with gold?
East Coast Dredger Heads West—Part III
There was an outcropping of exposed bedrock on the bank, and it again resurfaced in the river about 25’ away. I decided to start a hole near that exposed bedrock, and pointed the nozzle down into the sand and cobbles.
Michigan Proposal Would Restrict Mining Operations
A group called Michigan Save Our Water Committee is seeking a Michigan ballot measure that would prohibit some types of mining and restrict others.
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