All Articles
Evaluating a Placer Discovery
March 2000 by Dr. Ralph E. Pray
Gold mineralization is usually first noted in an area by examining material weathered from the source and liberated or washed downhill from it.
Enrichment of Mineral Deposits by Weathering—Part I
The exact minerals formed in the concentrated supergene deposits depends much on the type of country rock around the deposit and the chemistry of the deposit itself, but if conditions are right, this process will form some rich patches of bonanza ore, in some places valued at thousands of dollars to the ton.Mining Claim Fees Are Going Up
The Northwest Mining Association reports that the claim maintenance fee for 2004-2005 will be raised.
Gold and Silver Deposit May Be World's Largest
A crater in an undersea volcano off Japan may contain the world's largest gold nugget ever found...
Early Winter Detecting in the Sierras
The mine site consists of river gravels from an ancient channel covering over 20 acres, and the place is covered with very large river rock and small tree overgrowth.
PLP Update
We’ve heard from miners in Arizona about federal agencies closing off historic roads that provide access for miners, and we need your input.
Suction Dredging Battle Escalates
• State attorneys claim the Court of Appeals wrongly relied on South Dakota Mining Association v. Lawrence County regarding federal preemption...
Company Plans to Develop Cabinet Mountains Mine
A Spokane mining company says it plans to develop a silver and copper mine in the Cabinet Mountains Wilderness Area on the Idaho-Montana border.
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The Bawl Mill
• Group Sues Feds Over New Nat'l Monuments
• Tribe Joins Idaho in Roadless Suit
• 10,000 Shovels Back Protest
• Letter to the Editor—From Mike Miller, President, Original Sixteen to One Mine
• U.S. Dept. of Interior Inspectors in Arizona
• Wyoming Tops in Royalties
• Sunnyside, Arizona
• Company Notes
• Treasures for Sale
• "Gold" Coin Debuts
• Picks & Pans: Prospecting at Mills Creek, Alaska
• Delamar District, Nevada
• Millie's Tailings
• Adventure at the 420 Level
• Looking Back
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
