History & Geology
Natural Gold Alloys
March 2014 by Chris Ralph
Natural gold is never 100% pure; all natural nuggets contain at least some impurities. We're going to take a look at just what some of those impurities might be.
Additional articles that might interest you...
Calcite and Limestone
February 2017
The other distinguishing feature of calcite has to do with its chemistry. Geologists sometimes take a small bottle of dilute hydrochloric acid out into the field with them because calcite reacts with acids to make a bubbly foam.
The other distinguishing feature of calcite has to do with its chemistry. Geologists sometimes take a small bottle of dilute hydrochloric acid out into the field with them because calcite reacts with acids to make a bubbly foam.
Why Did This Silver Mine Close? - Pt III
December 2014
Narrowing down a closure date will allow you to check the commodity price during that time and possibly confirm that a low price, rather than a lack of ore, was the driving force that closed the operation.
Narrowing down a closure date will allow you to check the commodity price during that time and possibly confirm that a low price, rather than a lack of ore, was the driving force that closed the operation.
The Gold, Silver and Base Metal Mines of Eureka, Nevada
April 2015
...the area around Eureka, Nevada is well mineralized and seems to have a bright potential for future production of all sorts of metals.
...the area around Eureka, Nevada is well mineralized and seems to have a bright potential for future production of all sorts of metals.
Exploring A Historic Lode Mine
August 2016
Climbing up the debris, I pointed my flashlight up a shaft ascending straight up as far as my light would shine. It was the stope of the pay shoot leading to the old tunnel above!
Climbing up the debris, I pointed my flashlight up a shaft ascending straight up as far as my light would shine. It was the stope of the pay shoot leading to the old tunnel above!
Prospecting for Nickel Deposits
November 2010
The periodic exploration efforts for nickel during periods of high prices have been sporadic and incomplete. There is a role for the prospector and geologist in searching laterites potentially rich in nickel and mafic igneous bodies that may be rich in nickel.
The periodic exploration efforts for nickel during periods of high prices have been sporadic and incomplete. There is a role for the prospector and geologist in searching laterites potentially rich in nickel and mafic igneous bodies that may be rich in nickel.
Ask The Experts
July 2015
Q: Is there a correlation between fault zones and mineralization of economic metals?
Q: Is there a correlation between fault zones and mineralization of economic metals?
One of the Richest Beaches Ever Mined
April 2015
Everyone has heard of the golden beach at Nome, but Nome did not have the richest beach.
Everyone has heard of the golden beach at Nome, but Nome did not have the richest beach.
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The Bawl Mill
• Ask the Experts
• Ask the Experts
• Ask the Experts
• Ask the Experts
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• Reese River Silver Mining District, Nevada
• Twenty-Five Gold Indicators You Should Know
• Alaska: Large-Scale Mining Can Be Done Right
• Gold of the Iditarod Mining District, Alaska
• Bedrock
• Government Takes Land for Open Space
• Comments on Gold Rush and Bering Sea Gold Series
• Hidden Value in Old Tailings
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
