All Articles
The Basics of Small-Scale Heap Leaching with Cyanide
August 2007 by Chris Ralph
In last month’s article I talked a bit about opportunities for heap leaching small hardrock deposits. This month I’m going to talk about the basics of putting together a heap leach project, including building the pad and leaching the ore.
Additional articles that might interest you...
Gold Placers in Italy
August 2018
Gold is a fairly widespread mineral in the Italian Alps and in the Northern Apennines. It is found both in primary mineralization and in past and recent floods.
The Rand of South Africa
February 2002
The republic of South Africa (pop. 45 million) lies at the southern end of the African continent, and has been responsible for much of the world’s gold and diamond production. The first Europeans to settle in the region were Dutch, but the British...
The republic of South Africa (pop. 45 million) lies at the southern end of the African continent, and has been responsible for much of the world’s gold and diamond production. The first Europeans to settle in the region were Dutch, but the British...
All About Quartz—Part II
July 2013
In our May 2013 issue, we took a look at the mineral quartz, a mineral very commonly associated with gold. However, gold is not the only reason prospectors are interested in quartz. Quartz can also be very valuable as a gemstone
In our May 2013 issue, we took a look at the mineral quartz, a mineral very commonly associated with gold. However, gold is not the only reason prospectors are interested in quartz. Quartz can also be very valuable as a gemstone
Melman on Gold & Silver
January 2016
...a presentation of these important trends—which coincidentally have dominated the recent news—and my resultant predictions for 2016 and beyond, will make up the majority of this column.
...a presentation of these important trends—which coincidentally have dominated the recent news—and my resultant predictions for 2016 and beyond, will make up the majority of this column.
Breccia Pipes
December 2001
A breccia pipe, or chimney, is an irregular cylindrical mass of breccia that is often silicified and stands out as an iron-stained knob. They can be from a few feet to several hundred feet in diameter, and may or may not be mineralized.
A breccia pipe, or chimney, is an irregular cylindrical mass of breccia that is often silicified and stands out as an iron-stained knob. They can be from a few feet to several hundred feet in diameter, and may or may not be mineralized.
Delamar District, Nevada
March 2000
The Delamar (Ferguson) mining district is located in Lincoln County, Nevada, some 29 miles by road, southwest of Caliente. The district is on the west side of the Delamar Mountains at elevations between 5,900 and 6,600 feet.
The Delamar (Ferguson) mining district is located in Lincoln County, Nevada, some 29 miles by road, southwest of Caliente. The district is on the west side of the Delamar Mountains at elevations between 5,900 and 6,600 feet.
Mining Stock Quotes and Mineral & Metal Prices
January 2014
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The Bawl Mill
• Ask the Experts
• Will California Dredging Survive?
• Prospecting For Gold—The Osborne/Herman Hardrock Mine
• Journeys in the Kingman Quadrangle
• From Spanish Mine to Modern-Day Exploration: The Historic Gold-Silver Camp of Palmarejo
• Spanish Police Seize Ship in Treasure Fight
• Looking Back
• Gold Mine Proposed in Jefferson County
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
