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Small Mining Operations

The Fire Assay of Carbon

Carbon, activated charcoal, or “char,” as some old timers refer to it, can be an assayer’s nightmare.

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A Test Grid Dredged for Gold Values


The evaluation must also consider the gold fineness or purity. The purity of the Sugardaddy nuggets is estimated at 850 fineness, meaning 85% is gold (Au), 12% is silver (Ag) with 3% being other gangue alloyed metal.

Who is a Qualified Person?


So you think you have an ore deposit? The work has been long and hard, but there are a few drill holes, lots of samples and assays. The data is in a reliable computer and there may be a mine at the end of the tunnel. What is the likelihood of a profitable operation? Can you raise capital for development or exploration?

Putting Together A Small Free Gold Mill—Part II


There are many smaller old hard rock mines out there—more than you might think. There are some small hard rock properties that are even open to be claimed if one does the right amount of research to find them.

High Sulfidation Epithermal Deposits


They tend to be big, coming in large to extremely large sizes. They can also be amazingly rich and produce huge amounts of very high-grade ore.

The Heavy Minerals in Your Concentrates


The fact that mineral deposits can contribute specific types of heavy minerals is why the analysis of the heavy mineral concentrates in the streams of an area can be an important prospecting technique for finding undiscovered mineral deposits.

California Dredgers: A Step Closer to Getting Back in the Water


...Judge Ochoa ordered the parties to participate in mandatory settlement hearings starting June 24, 2014.

Good Research and Bad Luck


With every look at the box I was pulling out a few pickers and a nugget or two. The smile I had the previous night just got bigger and bigger throughout the day.

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