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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 Mountain Gate Mine
The Foresthill Divide in Placer County, California, has underneath its present surface a multitude of buried river channels, most of which paid enormously well in the Gold Rush years of 1850 to 1890.
Melman on Gold & Silver
Despite a variety of other side subjects, the dominant source of financial headlines during the past month continues to be Europe, and we note two particular foci...
Legislative and Regulatory Update
• GAO opinion contradicts Norton-Leavitt road deal
• Cubin wages battle over public lands decisions
• Washington State rivers are open, work continues
• Recent FWS habitat, endangered or threatened proposals
Cobalt and Nickel in Missouri
Cobalt and nickel are tough silver-white metals, with similar physical properties, that frequently occur together in nature, along with copper sulfides. Cobalt and nickel are used as alloys, providing great strength and resistance...
Ask the Experts — What are Washington state prospecting regulations?
Q: I moved to Washington State in September of 2006. After recently downloading the Washington Gold and Fish Regulations, I was stunned to learn that it will be nearly impossible to prospect or work a located claim in the state of Washington…
Looking Back
Excerpts from California Mining Journal, our original title, published 50 years ago this month.
Excavator Testing Wet Placer Ground
The excavator or backhoe has become the tool of choice for testing placer ground. These machines are the best way to explore and sample a placer deposit if the ground is not too wet or frozen and bedrock is not beyond the reach of the machine.
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The Bawl Mill
• Convention Report
• Interview with Congressman Gibbons on Mining Law Reform
• The Art of Finding Coarse Gold Part II—Pocket Hunting for Residual Placers
• Gold Canyon Resources Targets Gallium
• Picks & Pans: Auburn Ravine Gold
• Suit Filed to Stop Mining in Northern California
• Niobium and Tantalum
• The Iola Mine Group, Montgomery County, North Carolina
• Effectively Using a Detector and Drywasher for Placer Gold
• Mining Companies Use Conservative Valuations
• Company Notes
• Accident at Robinson Mine Leaves Two Dead
• Looking Back
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
