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Over the Divide
August 2014 by Staff
Dr. Ralph E. PraySimple Rules of Gold Geology: Comparing Epithermal and Mesothermal Deposits
Geology is a science of general tendencies with frequent exceptions, not one of hard and fast rules that are always true and never vary. For almost every well-accepted rule of gold deposits, I can point you to a number of important exceptions.
Precious Metals in the Patagonia Mountains
The Patagonia Mountains are a small but rugged mountain range that adjoins the Mexican border some 9 to 16 miles east of the border town of Nogales. The range trends northerly for 14 miles and is about 10 miles wide, reaching an elevation...
Legislative and Regulatory Update
• More roadblocks to dredging in California
• Two Oregon Sheriffs challenge Forest Service authority
• Gold is money
Geologist's Search for PGMs Leads to Mining Venture
One look at a map of the northern portion of Ontario province in Canada clearly identifies it as an area of immense beauty. From Georgian Bay on Lake Huron across to Lake Nipissing and all points north, it is a land of...
The Art of Finding Coarse Gold Part IV—Recovery of Coarse Gold From Alluvial Placers
This last installment in the series will look at methods for finding and recovering coarse gold from alluvial (river and stream) placer environments. Unlike the residual and eluvial placers that we have considered previously, the force of flowing...
Legislative and Regulatory Update
• Critical minerals obtain national security status
• Idaho to take over EPA permitting
Following Clues to a Lost Gold Deposit—The Northern Extension of the Cedarberg
Last month, in “Following Clues to a Hidden Gold Deposit,” I ended the article with the direction that we were on the hunt! We were getting prepared and ready to roll with our detectors, then snow came, and lots of it. We had already found the seam diggings mine on the mountainside in wild, rough brush and trees. It had been well hidden.
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• Sniping for Drought Gold
• Successful Rally for Suction Dredge Miners in Idaho
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