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History & Geology

Mineralized Faults and Contacts in the Search for Gold

Fault zones and rock contacts are important because the vast majority of gold and silver deposits, as well as those of many other metals, are formed by hot, mineralized water solutions.

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Additional articles that might interest you...

Understanding and Prospecting Benches


The most obvious benches are usually near the valley floor, but they can be thousands of feet above the valley floor. Since benches were made by streams, they can contain placer deposits.

The Significance of Nuggets in Placers


Chances are better that both types of gold did not come from the same source. Let's look at the probable conditions to cause two types of gold in a placer.

The Oquirrh Mountains, Utah


...we will visit three dormant mining districts that lie in the Oquirrh Range in Utah. Some major activity that transformed the lives of thousands of people occurred here from the mid 1860s to the late 1990s.

The Golden Streams of Butte County, California


Even though these were some of the earliest placer deposits to be worked, there is still plenty of gold left today—it just takes more work to recover. Knowing about the old locations where gold has been found is the first step to success.

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.

California's Mother Lode Quartz Veins


The actions of the hot, ore-bearing solutions are not limited only to the deposition of material within the walls of the fissures.

The Geology of Diamond Deposits


New theories have been developed and they may lead to new discoveries and give prospectors some new insight on where to look for diamonds.

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