The Goldfield Mining District, Nevada—Part II

July 2017 by Chris Ralph

The majority of the gold produced in Goldfield has come from ores that are close enough to the surface to be oxidized by the air. This oxidized ore is normally a soft, shattered, earthy material usually stained yellow to brown by oxides of iron.

Gold and Silver Deposits of Bodie, California

November 2019

Bodie, California, in its heyday, was once rumored to be one of the roughest and most lawless towns in the American West.

Nevada's Silver City Gold District—Part I

March 2016

The name Silver City is quite ironic as it doesn’t really fit the area’s metal production. The area encompassing the Silver City district is a great, stand-alone gold district, where the production value of gold has been much more than that of silver. Since the initial discovery of gold-bearing veins in the mid-1850s, the area has been a center of continuous small and large-scale gold production.

Benches and Fossil Placers

March 2013
Unfortunately for us mortal humans, we have a poor perspective on geologic time. When we look at a landscape such as a stream valley, we see it only in two, or at the most, three dimensions. We have poor comprehension of the valley’s fourth and most important dimension—time.

The Ely Copper-Gold District of Nevada

January 2015
The main ore deposits of the Ely district are associated with an east-west belt of altered and mineralized rocks measuring about one mile wide that extends 8 miles westward from Ely.

How Mesothermal/Orogenic Gold Deposits Form

August 2021

These deposits are very widespread across the planet. In fact, they are so extensive that something around 75% of all the gold ever mined comes from these types of deposits (if one includes the placer deposits that also formed from them).

Copper Deposits of Alaska

February 2014
Only the famous Kennecott copper mine was able to continue operating through the Depression owing to the exceptional richness of its ore.

Gold in Quartz

February 2016
Because quartz and gold may be deposited together across a considerable range of temperatures, not all quartz veins are the same, and there are several different types of gold-quartz deposits.

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