VMS Deposits in Central Arizona
October 2004 by John RothermelVolcanogenic 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.
Lately my mind has been involved with group 4 of the transition elements, namely titanium, zirconium, and hafnium. They all have similar chemical properties. Of greatest interest to economic geologists and miners is that these valuable elements often occur together in sands.
- Those “dog-gone” fraud charges
- Fake news
• Home, home on the range...where the deer and the non-native antelope play
• Today's math lesson: Study x 3 = Taxpayer Waste
Tiffany & Co. plans to open its first diamond cutting and sorting plant early this year in conjunction with its investment in a diamond mine in Canada’s Northwest Territories.
In last month’s article I talked a bit about opportunities for heap leaching small hardrock deposits. This month I’m going to talk about the basics of putting together a heap leach project, including building the pad and leaching the ore.
By the time you receive this issue of ICMJ, the November election will be only a few weeks away, and the campaign is finally heating up. Quite surprisingly, Vice President Gore has taken the lead in recent polls from the early front-runner, George "Dubya" Bush.
One caller wondered why he should be required to join MMAC, asked why MMAC was not a non-profit, and compared it to some kind of extortion attempt. If he had questions like these, I assume there are others with similar questions and I will address them here.
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