All Articles
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.
Additional articles that might interest you...
The Ocampo District, Chihuahua
April 2003
The village of Ocampo is wedged in a canyon about 178 miles, by Mexican Highway 16, west of the city of Chihuahua. It is a few miles west of Basaseachic Falls, and a few miles south of Highway 16, in high chaparral at an elevation of 6,500 feet. The completion of Highway 16 across the Sierra Madre Occidental greatly improved access to the region...
The village of Ocampo is wedged in a canyon about 178 miles, by Mexican Highway 16, west of the city of Chihuahua. It is a few miles west of Basaseachic Falls, and a few miles south of Highway 16, in high chaparral at an elevation of 6,500 feet. The completion of Highway 16 across the Sierra Madre Occidental greatly improved access to the region...
Prospecting for Diamonds
January 2013
Let’s take a look at diamonds and diamond mining and see how they form, how they are used beyond just jewelry, and what leads geologists to find diamond deposits.
Let’s take a look at diamonds and diamond mining and see how they form, how they are used beyond just jewelry, and what leads geologists to find diamond deposits.
Journeys in the Kingman Quadrangle—Part II
September 2007
In the northwest section of the Kingman Quadrangle, the Kingston Range rises out of the alluvium of the Pahrump and Mesquite valleys. Kingston Peak, rising to an altitude of 7,320 feet, towers high above its foothills.
In the northwest section of the Kingman Quadrangle, the Kingston Range rises out of the alluvium of the Pahrump and Mesquite valleys. Kingston Peak, rising to an altitude of 7,320 feet, towers high above its foothills.
Ask The Experts
September 2016
• Is there a standard contract for placer mining to use with a private property owner?
• Is there a standard contract for placer mining to use with a private property owner?
Looking Back
January 2000
Excerpts from CMJ, our original title, published 50 years ago this month.
Excerpts from CMJ, our original title, published 50 years ago this month.
So, Where's The Gold?—Finding Gold Detectors Miss
December 2010
We decided to run a detector over each piece. If we got a decent signal we placed the piece into a high-grade pile and the rest went into another pile to be worked on later. This high-grade pile wasn’t that large—maybe 25 pounds...
We decided to run a detector over each piece. If we got a decent signal we placed the piece into a high-grade pile and the rest went into another pile to be worked on later. This high-grade pile wasn’t that large—maybe 25 pounds...
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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
