History & Geology
"Gold Rush: Alaska" in the Porcupine Mining District
June 2011 by Jim Halloran
Honestly, I don’t believe it is likely there would be a glory hole where they described one at the bottom of the waterfall because plunging water with enough energy to scour out a large hole in bedrock would have the scouring ability to grind up and...
Additional articles that might interest you...
The Pearce Mineralized Area, Dragoon Mountains, Arizona
July 2013
...I would bet considerably more lode gold and silver remains to be found in this area, and there are possibilities for small placers and nugget shooting.
...I would bet considerably more lode gold and silver remains to be found in this area, and there are possibilities for small placers and nugget shooting.
The Pearce Mineralized Area, Dragoon Mountains, Arizona—Part II
August 2013
There are many prospects within the known mineralized area and along the margins of the mineralized area that should be examined for gold and silver.
There are many prospects within the known mineralized area and along the margins of the mineralized area that should be examined for gold and silver.
Testing Ores for Free Gold
December 2011
I get a number of questions from people about testing and treating hard rock ores. The simplest way, but also an expensive one, is to just have an assay test done by an independent assay firm. As an alternative...
I get a number of questions from people about testing and treating hard rock ores. The simplest way, but also an expensive one, is to just have an assay test done by an independent assay firm. As an alternative...
California: The Land of Big Nuggets—Part II
January 2018
There are a number of Tertiary river channels in the area, most of which trend south-southwest. They tend to be steep, narrow, and rich with coarse gold.
Ask The Experts
June 2015
Gold in clastic black shale
Gold in clastic black shale
Ask The Experts
March 2015
Q: Is this gold or some other metal?
Q: Is this gold or some other metal?
Refractory Gold Processing
February 2013
After your excitement peaks when you first receive the high gold assay from the vein you just exposed, you ponder how you will extract and sell your gold. You will need to develop a flow sheet for your process to optimize your recovery and minimize your costs and permit requirements.
After your excitement peaks when you first receive the high gold assay from the vein you just exposed, you ponder how you will extract and sell your gold. You will need to develop a flow sheet for your process to optimize your recovery and minimize your costs and permit requirements.
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