Enrichment of Gold Veins
November 2000 by Edgar B. Heylmun, PhDMost of the world's great gold mines are in secondary (supergene) enrichments in veins and stockwork, brought about by physical and chemical processes.
- “Pensions before Honesty. Great slogan.”
- An untimely death…
Five executives from the American mining giant Newmont will continue to be jailed while facing pollution charges in Indonesia, police said, despite test results that show “normal” mercury levels near a former gold mine.
This was not a month for the weak-hearted. During the past thirty days, we have had an explosive intensification of the Middle East conflict, threats of OPEC using the “Oil Weapon” once again, a growing chain of events flowing out of the Enron collapse and...
Not much has changed along the original stage road that runs easterly from an old schoolhouse northeast of Nogales into the Patagonia Mountains of southern Arizona. Marked on the maps as Duquesne Road, the route has been in use for over 130 years, climbing from the hot desert floor to an almost 6,000-foot elevation pass before dropping back down the eastern slope of the mountains to reach the old mining camps of Washington, Duquesne, and Lochiel.
In the meeting, we presented Ms. Skalski with the various court cases from the 9th Circuit Court on these settled law cases and she was mortified.
“They’re taking it to the grave with them.” These words came from my Canadian mining partner when we discussed what he had learned from an elderly gentleman in a nursing home. While that particular visit was not very successful, we had a number of others that worked out far better.
Ivanhoe Mines announced that Rio Tinto will invest $1.5 billion to engineer, construct and operate Ivanhoe’s Oyu-Tolgoi copper and gold project in the South Gobi region of Mongolia.
The Bawl Mill • Our Readers Say • The Assay of High Iron Gold Ores • The Patch • History of Mining—Bradshaw Mountains, AZ (Part I) • Picks & Pans—The Green Rock, Rattlesnakes, Good Gold and Ruth's Mine • The Oretron • Silver Hill, North Carolina • Residual, Lateritic and Gossan "Soils" as Potential Nuggetshooting Sites • Hardrock in Downieville • Looking Back • Company Notes • Gold in Northern Baja California • California State Gold Panning Championship Results • Melman on Gold & Silver • V.P. Contender Addresses Mining Show