All Articles
Carbonatites
February 2005 by Edgar B. Heylmun, PhD
Carbonatites are rocks that formed from molten calcite or dolomite. The thought of calcite being molten lava is difficult to accept, but it was confirmed when it poured out of a vent in Tanzania in 1960.Northern Dynasty Chooses Partner for Pebble
The Canadian company that owns the Pebble Mine prospect has partnered with Anglo American to develop the Pebble project in Southwest Alaska.
Here Come the MineBots
In March 2004, Vulcan, a mine exploring robot from the Discovery Miner Program, was shipped to the Vulture City region to investigate the conditions of an abandoned hard rock mine. The shaft was typical of the dangerous mines that are...
Prospecting Tales: Forest Service, Fires and Bears—Oh My!
I woke up on Sunday morning, August 10, to heavy smoke. I saw where it was coming from, but it seemed like it was a long way off so I thought I was okay for the time being.
2007 Annual Photo Contest Winners
East Coast Prospecting Challenges
There is one gold prospecting requirement... that remains a steeper challenge to prospectors in certain portions of the United States.
The Search for Specimen (Pocket) Gold in the California Mother Lode
Any good miner can drift along a vein to find concentrations of gold if it is there, using good eyes and panning.
The Fire Assay of Fly Eyes
Colorado-Utah-Wyoming oil shale was first reliably discovered to contain gold and silver by the U.S. Bureau of Mines in the 1920s. Although most of this vast shale resource, up to 1,000 feet in thickness, contained nil or barely detectable values, many brown shale samples fire assayed here over the past thirty years have yielded up to 0.02 ounces per ton (opt) Au and 2.0 opt Ag.
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The Bawl Mill
• Shortage of Mining Engineers Projected
• Ex-MarketWatch Mining Promoter Settles Charges
• Sage-Grouse Listing Denied
• The Art of Finding Coarse Gold—Part III
• Tongass Approves Kensington Mine Plan
• PLP Interim Rule Raffle
• California Miners Locate Rich Pocket of Specimen Gold
• The Lucky Shot Mine
• BC Premier Heralds "Golden Decade" in Forestry and Mining
• Drywashing for Eluvial Gold in the Desert—Using a Portable Drywasher and Hand Tools
• Claim Filings Up in the Northwest
• Canadian Officials Foresee Little Impact From Mine
• Coeur d'Alene Mines Sees Future in Bolivia
• The Golden Highway—Nevada County
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
