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Lamproites and Diamonds

Most prospectors are aware that diamonds are sometimes found in kimberlite, but few are aware that diamonds are also found in another rock type known as lamproite. Lamproite is a very rare volcanic rock that often...

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AZ Miners and Minerals Department Threatened with Elimination


Once again, the Arizona Department of Mines and Mineral Resources (ADMMR) is being threatened with elimination.

Addressing EPA Overreach: What Dredgers Need to Know


The Environmental Protection Agency (EPA) has been attempting to extend their authority and intimidate miners and other public land users for decades. Suction gold dredgers are no exception, and we want to highlight a recent example of how to deal with this federal overreach.

Researching and Staking Mining Claims


One of the greatest opportunities still available to Americans is the opportunity to stake and own your own mining claim. Much of the Western US consists of lands that are open to claim by any US citizen...

A Data Miner Builds A Power Sluice


Data mining involves processing huge amounts of digital information to find hidden patterns and financial relationships. To executives, the findings are like gold, but on the weekends, I prefer seeing the real thing in the bottom of my pan.

Looking Back


Excerpts from California Mining Journal, our original title, published 50 years ago this month.

A Guide to Overlooked Gold Deposits—Part V (Conclusion)


This is the primary geological and mineral assessment agency in the US. Part of the Department of the Interior, the Geological Survey, often just called “The Survey” or USGS, has been in business since its founding in the 1800s. This means you can obtain publications all way the back to the early days of the survey...

MMAC Update


We have found strong support from legislators in both the House and Senate for several proposed bills that will provide Mining Districts with a greater role in the decisions that affect access to mining claims, oversight and regulations.

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