All Articles
NAS Agrees to Review Superfund Science
June 2002 by Associated Press
The National Academy of Sciences has taken a step toward reviewing a proposed cleanup plan in Idaho.History of Mining—Bradshaw Mountains, AZ—Part II
Last month, the earliest mining areas of the Bradshaw Mountains around Prescott, AZ, were explored in the first part of the article. The Lynx Creek and Walker areas still provide many opportunities for weekend prospectors...
Operation And Application Of Magnetometers
The technology used in these devices has advanced greatly in the last century. Many different types of physical effects are used to measure these magnetic fields and we will briefly look at some of these.
All About Chalcopyrite
…there are loads of different copper minerals, but a large number of them form first in the ground as chalcopyrite and then through the effects of weathering are changed into other minerals like malachite, cuprite and chrysocolla.
The Colorado Mineral Belt
The 250 mile long Colorado Mineral Belt cuts diagonally across central and southwestern Colorado, in the heart of the Rocky Mountains...
How to Interpret Assay Values
This assay system of ounces per ton sounds simple enough, but the use of the metric system and the additional measuring terms of “grams per ton” and “parts per million” (ppm) has created some misunderstanding of ore value.
Carbonatites
Carbonatites are rocks that formed from molten calcite or dolomite. The thought of calcite being molten lava is difficult to accept, but it was confirmed when it poured out of a vent in Tanzania in 1960.
Subscription Required:
The Bawl Mill
• ICMJ Elected Prospecting Magazine of 2002
• Mining Investment—Or Fraud?
• Gold in Suriname
• Golden Age of Gold Dredges
• Prospecting With Limited Equipment
• Looking Back
• Beryllium in Utah
• Company Notes
• Picks & Pans: The Gold of "Eldorado Canyon"—Mariposa County, California
• Fire Agate in Arizona
• The Canton Lead
• Tight Budgets Force Forest Service to Cut Back
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
