History & Geology
Quartz: The Indicator of Gold
August 2022 by Chris Ralph
Quartz: The Indicator of Gold
The Ups and Downs of Geologic Faults
![](http://icmj.com/userfiles/images/201105/toc-faulting.jpg)
Perception of Mining vs. Reality
![](http://www.icmj.com/userfiles/images/201505/40-perception-of-mining.jpg)
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...
Jamestown and Our Mother Lode Gold Rush Adventures
There are many other locations in the area where gold has been found, but Woods Creek is the most famous of the creeks and gulches in the area where the 49ers searched for that elusive yellow metal.
Benches and Fossil Placers
Unfortunately for us mortal humans, we have a poor perspective on geologic time. When we look at a landscape such as a stream valley, we see it only in two, or at the most, three dimensions. We have poor comprehension of the valley’s fourth and most important dimension—time.
PGMs in the United States
![](http://www.icmj.com/userfiles/images/199908/TOC-pgms.jpg)
Silver and Base Metal Deposits of the Pioche District
![](http://www.icmj.com/userfiles/images/201406/TOC-base-metals.jpg)
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