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Feds Deny Lease Renewals for Minnesota Mine

Two longstanding mineral rights leases that are critical for a proposed large underground copper-nickel mine upstream from the Boundary Waters Canoe Area Wilderness in northeastern Minnesota will not be renewed, two federal agencies announced…

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Modern Mining Reclamation


A study showed that between 1930 and 1980, only a quarter of one percent of the land in the United States was used in all mining applications combined, including surface mining, tailings disposal, underground mines, and all mineral processing facilities.

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.

Canadian Company Recovers 1,111-Carat Diamond


It is the second largest gem-quality diamond in history, after the 3,106-carat “Cullinan Diamond” was recovered in South Africa in 1905.

Large Gold Deposit Types


It is not necessary to have a PhD in geology, but you need to know the basics, so that’s what I am going to try to dig into here—the understandable basics of these gigantic gold deposits.

The Basics of Exploration Leases and Contracts—Part II


This is the point where you might ask, “What do these types of contracts typically look like and how are they negotiated?” Well, that is the topic of this month’s article.

EPA Reopens Comments on Pebble Project


The settlement did not grant an immediate approval for the project, but it did begin to clear the way for the company to apply for federal permits—a path the Obama administration previously had thwarted.

What About Palladium?


Palladium may well be an underexplored element and therefore an opportunity for prospectors and geologists. This is because they are often less than obvious and other than the native metals, a chemical analysis of samples is required to identify PGM-enriched rocks.

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The Bawl Mill   • Ask The Experts: Could you expand on your previous blasting article?   • Ask The Experts: Equipment to break up heavy clay   • Ask The Experts: “Energy” coming from black sand?   • Ask The Experts: Assay problem or recovery problem?   • Legislative and Regulatory Update   • Detecting Strategies for Heavily Forested Areas—Part II   • The Winning Hand   • Early Winter Detecting in the Sierras   • Gangue Minerals - What Do They Tell Us?   • Mining Districts in Montana Get Organized   • Obama Administration Moves to Block Mining Near Yellowstone   • The Perfect Response   • MMAC Update   • Mining Stock Quotes and Mineral & Metal Prices   • Melman on Gold & Silver

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