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Prospecting With Color
December 2000 by Edgar B. Heylmun, PhD
Perhaps no one factor has caused more confusion in the search for ore than the attempt to use color as a guide to prospecting. Yet, there is a reason for every color seen in rocks, so it deserves to be noted.
Looking Back
Excerpts from CMJ published 50 years ago this month.
Legislative And Regulatory Update
• Republican bill would reopen Grand Canyon withdrawal
• Obama recommends additional fees and taxes on miners
Prospector Finds Cache of Emeralds in North Carolina
"This is just the tip of the iceberg," Hill said. "It's going to take 200 years to dig it all out."
Following the Clues
It took me awhile before I finally got a nice mellow signal. My nugget turned out to weigh in about two dwt (pennyweight). Over the next few hours, we all picked up a few more nuggets apiece.
Asarco Accepts Phelps Dodge Buyout
Asarco Inc. accepted a sweetened buyout offer from Phelps Dodge Corp., setting up a three-way, $2.9 billion deal that will make Phelps Dodge the world's largest copper producer.
Placer Mining in Canada's Yukon Territory
Frank Taylor’s family has been mining in the same area of the Yukon Territory since 1935. He’s been working his current placer operation on Duncan Creek near Mayo since 1975.
Mining Deaths Drop to New Low in 2001
Fatal injuries at mines in the United States declined last year to a historic new low, according to preliminary data released January 3, 2002, by the Mine Safety and Health Administration (MSHA).
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The Bawl Mill
• Letter to the Editor
• Potaro District, Guyana
• World Gold Council Launches $3 Million Ad Campaign
• Prospecting for Platinum in Wyoming
• Picks & Pans: More Big River Dredging in Northern California
• Epithermal Ore Deposits Associated With Tertiary Volcanism—And the Feasibility of Metal Detecting for Them
• A Changing Diamond Industry Looks to Canada for Growth
• History of Mining—Bradshaw Mountains, AZ—Part II
• Company Notes
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
