History & Geology
Electrum: Gold and Silver Together
January 2016 by Chris Ralph
...if you are out prospecting and find something that looks very much like a nugget but has an odd greenish-gray cast to it, don’t be too quick to simply toss it aside as junk.
Exploring Iron Oxide Copper Gold Deposits
The excitement over IOCG deposits began with the discovery of a monster deposit at Olympic Dam in Australia in 1976. The discovery was accidental as the operator was searching for strata-bound copper deposits.
Gold Deposits of the Ivory Coast
Ivory Coast has considerable gold reserves, and this nation has the largest area of greenstone belts prospective for gold in the continent.
Residual Placers: An Often Overlooked Gold Source
Because the forces of erosion and gravity tend to carry lighter materials like quartz away more easily, the heavy minerals like gold or silver will tend to be concentrated in the general area around the vein outcrop. These concentrations are what make residual placers so attractive.
The Ups and Downs of Geologic Faults
Faults are fractures, breaks and broken zones in the Earth’s crust where one side of the break has moved relative to the other, and they come in many different varieties.
Silver Peak, Nevada: A Little of Everything
Silver Peak is a small mining community in Esmeralda County in west-central Nevada, about 30 miles west of Goldfield. Although it’s fairly remote, it’s been an important mining center since the early days.
Polymetallic Skarn Deposits
Polymetallic skarn deposits are an interesting class of deposits that can contain a number of different types of metals.
ICMJ Visits Colfax, California
February 2023
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The Bawl Mill
• Ask The Experts
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• Ask The Experts
• Ask The Experts
• Detector Prospecting Accessories
• Drywashing Arizona Gold
• Mineralized Faults and Contacts in the Search for Gold
• Sunshine and Gold
• A Successful Trip Through Gold Basin
• Oregon Miners File for Summary Judgment
• The Significance of Nuggets in Placers
• The Strange History of the Utica Mine
• Forest Service Seeks to Lock Miners Out in South Dakota
• Maitland Bar Nugget to Go On Display
• Company Says Central Idaho Project Feasible
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
