All Articles
VMS Deposits in Central Arizona
October 2004 by John Rothermel
Volcanogenic Massive Sulfide (VMS) deposits in the Central Arizona Precambrian volcanic belt occur within a felsic package of volcanic rocks capped by an exhalite unit comprised of cherts, iron formations and siliceous members.
Adventure at the 420 Level
Beneath the rolling fairways and manicured greens of a sedate golf course community in Cabarrus County, North Carolina, lie the 600-foot deep, water filled, caved workings of the once famous Phoenix Gold Mine.
Update on Oregon, Idaho and California Suction Dredge Permits
As expected, the State of Oregon has proposed a new general National Pollutant Discharge Elimination System (NPDES) permit that is considerably more restrictive than the one that is currently in effect
Legislative and Regulatory Update
Oregon Senate passes Senate Bill 3
Small-Scale Hard Rock Mining With Water Recycling
Once I have established the presence of gold in the sample, I collect five-gallon bucket quantities of the rock material for processing back at my shop.
Hecla Fights Bad Actor Label in Montana
Environmental groups last year urged Montana regulators to impose the bad actor designation, and now are seeking to intervene in the case.
From Curiosity to Mine Owner - Pt II
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When we last heard from Ernie, he was still in Honduras and we were anxiously waiting to hear how the set up and training went at the mine. It got a bit complicated after that.
Honda Pares Down Use of Precious Metals in Autos
Honda Motor Co. said it will begin using new catalytic converter technology it believes will slash use of pricey precious metals in auto emission-control systems by 50 to 70 percent.
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The Bawl Mill
• Update: Forest Service Interim Rule
• The Guyana Highlands
• Prospecting with a VLF-Type Gold Detector
• Freegold Ventures' Golden Summit Project
• Picks & Pans: Working the Crevices
• Molybdenum
• 2004 California State Gold Panning Championships
• Company Notes
• Why Environmental Groups Prefer Kerry
• The French Mines of El Boleo
• Looking Back
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
