History & Geology
Arizona's Vulture Gold Mine and Lost Dutchman
May 2012 by W. Dan Hausel
When prospectors and treasure hunters talk of gold in Arizona, it is the Lost Dutchman or Vulture mine they usually think of. The Lost Dutchman gold mine is just that—a myth chalked full of holes that has been embellished over time as any good legend should be.Additional articles that might interest you...
How Rich Must My Ore Be?
May 2021
How rich does a hard rock ore have to be for it to be worthwhile to process and extract the gold?
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.
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.
Gangue Minerals - What Do They Tell Us?
January 2017
There are a large number of different kinds of gangue minerals, and each of them has its own tale to contribute to the story of the chemistry and geology of a deposit.
There are a large number of different kinds of gangue minerals, and each of them has its own tale to contribute to the story of the chemistry and geology of a deposit.
The Paragenesis of Gold & Silver Deposits
March 2015
…if you are game for digging in and learning more about the intricate details of how gold deposits form, then let’s jump right in.
…if you are game for digging in and learning more about the intricate details of how gold deposits form, then let’s jump right in.
Gold From Cemented Gravels
November 2011
The truth is that cemented gravels are really not all that complex. There is no mystery of how gold grew there or somehow wormed its way into these solid gravels.
The truth is that cemented gravels are really not all that complex. There is no mystery of how gold grew there or somehow wormed its way into these solid gravels.
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.
Critical Metals: Lithium
February 2014
Prospecting for lithium deposits can take a number of different directions, because this metal can be extracted from a variety of geologically differnet sources.
Prospecting for lithium deposits can take a number of different directions, because this metal can be extracted from a variety of geologically differnet sources.
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