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Critical Metals: Lithium

Prospecting for lithium deposits can take a number of different directions, because this metal can be extracted from a variety of geologically differnet sources.

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Confluence Placers


Confluences of placer streams are well known as concentration sites for heavy minerals. The basic reason is that...

Reno's 1872 Time Capsule Includes Gold Rush Lore


The Reno Masonic Lodge was built along the railroad tracks back when Ulysses S. Grant was president and shortly after the Comstock Lode of gold and silver was struck in Virginia City.

Gold, Quartz & Chalcedony—Part II


The specific gravity of chalcedony is 2.58 to 2.64. This is slightly lower than coarsely crystalline quartz because of slight porosity in chalcedony. Being so light, it will easily wash out of a gold pan.

How to Recognize Hard Rock Gold Ores


I regularly get inquiries along the line of: “Hey, I found this rock, and I think it might be gold ore. How can I tell?” Prospectors are always on the lookout for gold-bearing rocks that may be the source of any nearby placer gold.

Testing Ores for Free Gold


I get a number of questions from people about testing and treating hard rock ores. The simplest way, but also an expensive one, is to just have an assay test done by an independent assay firm. As an alternative...

Placer Gold Deposits of New Mexico


While a large number of locations have yielded some placer gold, most of the state’s placer production has come from a few productive districts.

Why Is The Gold On Bedrock—Or Why Is It Not?


Gold on the bedrock is a good rule of thumb, but not one that is 100 percent effective. There are plenty of exceptions. So, how does a prospector recognize those exceptions?

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