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History & Geology

What Are Those Rocks In My Pan?

The placer mineral identification key is designed to answer this question. It attempts to recognize all the minerals in your gold pan concentrates.

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Critical Minerals: Gold


A few quick calculations show that approximately 11 tons of gold are lost each year just in the manufacture of new cell phones.

It Pays to Know Your Bedrock


On our last trip, we brought ropes and went down the first waterfall forty vertical feet, only to be confronted by a second, sixty-foot-high, overhanging waterfall that emptied into a slot canyon.

Mass Wasting & Gold Deposits


Not all of these slides and debris flows will produce results, but if you search for these while prospecting in your gold producing areas, then you can increase your odds of finding new gold.

Prospecting for Copper Ores—Part II


Copper is a critically important metal that we need to run our modern electronic society, and the long term outlook for this metal is for a steady increase in price.

Exploring Iron Oxide Copper Gold Deposits


The excitement over IOCG deposits began with the discovery of a monster deposit at Olympic Dam in Australia in 1976. The discovery was accidental as the operator was searching for strata-bound copper deposits.

The Silver, Gold and Gemstones of Candelaria, Nevada


The Candelaria area is of interest to prospectors not just for silver, gold and other metals, but also for the beautiful gemstones found there.

Fabulous Florence—The Golden Town of Idaho


In September 1861, on a round-about prospecting journey homeward, five California gold miners discovered gold in the area now called Florence. While watering the horses, one of the men noticed a golden color on a piece of slate bedrock in the stream...

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