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Tucson Mountain Chaos
January 2005 by Edgar B. Heylmun, PhD
The Tucson Mountains are immediately west of Tucson, in southern Arizona, and include residential areas of the city. The highest peak, Wasson (Amole) Peak, reaches 4,687 feet. It is part of the great Basin-Range physiographic province, characterized by fault-block mountain ranges separated by broad desert valleys.The Fire Assay of Fly Eyes
Colorado-Utah-Wyoming oil shale was first reliably discovered to contain gold and silver by the U.S. Bureau of Mines in the 1920s. Although most of this vast shale resource, up to 1,000 feet in thickness, contained nil or barely detectable values, many brown shale samples fire assayed here over the past thirty years have yielded up to 0.02 ounces per ton (opt) Au and 2.0 opt Ag.
Mining Stock Quotes and Mineral & Metal Prices
Mine Reopening Could Revive Region
Cominco American Inc., the U.S. subsidiary of Vancouver, British Columbia-based Cominco Ltd., is seeking regulatory approval to reopen the mine in early 2002.
Roads Protecting Grizzlies Reopen
U.S. Forest Service officials are drawing criticism from environmentalists for reopening some back-country roads that had been closed to protect threatened grizzly bears.
Prospecting for Gold in Baja California
It was one of those awkward situations as we walked, fatigued and too thirsty to speak a word.
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