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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.
Ask the Experts
• Is this old mining story too good to be true?
Gold and Rare Earth Elements in New Mexico
We import nearly all of our REEs from China, so it’s critical that we find and continue to develop domestic resources of these elements.
Central Coast Ranges
A series of coastal ranges, separated by narrow valleys, characterize coastal California south of Monterey. The mountains rise to 5,800 feet in elevation, with annual rainfall varying from 12 to 64 inches, depending on elevation and exposure.
What's Left Behind
I love to see old-timer workings while I am out detecting for gold. For one thing, it assures me that gold came from there. Second, it tells me gold should almost certainly still be there.
Mining Stock Quotes and Mineral & Metal Prices
The Wild Rush To Find More Cobalt—Part II
In this second part on cobalt, I will take a look at the various types of cobalt deposits and how you can prospect for them. Who knows—perhaps the next big cobalt strike will be yours.
N.Y. Congressman Introduces Utah Wilderness Bill
For the fifth time in the last decade, New York Congressman Maurice Hinchey has introduced legislation to set aside wilderness in Utah.
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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
