Kennecott Copper Mine, Kennecott, Alaska

October 2017 by Jack Geck

For approximately 30 years, the mines produced good ore, some so rich it was simply sent straight to bagging, bypassing milling and loaded directly on the rail cars.

Yesterday's Gold—Today's Mine

December 2011
It would seem that we are often indeed destined to repeat history. In terms of gold discovery, even with all the advancements that have been made over the years, it seems we are once again on the cusp of returning to the 1800s world of gold mining. Even as you read this, a new gold rush is taking place in a sleepy little town in South Carolina.

The Ups and Downs of Geologic Faults

May 2011
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.

Simple Rules of Gold Geology: Comparing Epithermal and Mesothermal Deposits

July 2017

Geology is a science of general tendencies with frequent exceptions, not one of hard and fast rules that are always true and never vary. For almost every well-accepted rule of gold deposits, I can point you to a number of important exceptions.

Gold Refining In The Ancient World

March 2015

One thing that stood out for me is that Agricola was very specific about the type of metal or wood in the implements and vessels that were to be used.

Eastern Arizona: Gold and Base Metal Deposits—Part I

February 2011
Arizona is well-known for its copper-gold porphyries and massive base metal-gold sulfide deposits such that primary gold deposits in the state are often overshadowed.

Jadeite in California

April 2015
...two jadeite locations in California have been thoroughly researched by geologists. There are no doubt others that lie in wait.

Prospecting With The Help of Fluvial Geomorphology

March 2011
Quiz yourself about the stream in figure 5. Based on your previous knowledge of where gold is found in a stream and in this article, where do you think you will find the most gold?

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