All Articles
The Furnace Atmosphere During the Fire Assay
January 2001 by Dr. Ralph E. Pray
It has been claimed that the introduction of excess air to the assay furnace during sample fusion can materially increase the gold yield. Testimony by expert witnesses for the defense in recent federal hearings dealing with the dependability of the gold fire assay includes data purported to show this.Additional articles that might interest you...
Successful Detecting Requires Attention to Detail—Part I
August 2016
So much of gold detecting depends on attention to detail. Every gold area offers its own distinct geological markers and as prospectors we must pick up on those markers.
So much of gold detecting depends on attention to detail. Every gold area offers its own distinct geological markers and as prospectors we must pick up on those markers.
Ask the Experts
June 2014
• Recovering platinum
• Recovering platinum
Prospecting and Mining Old Mine Sites
December 2016
In some places valuable ores can be found within the waste material of mine dumps, sorted ore piles, and detrital vein matter at the surface. Though many of these old mine sites can be an excellent source of gold, not all are created equal.
In some places valuable ores can be found within the waste material of mine dumps, sorted ore piles, and detrital vein matter at the surface. Though many of these old mine sites can be an excellent source of gold, not all are created equal.
The Pothole Patch
January 2015
"Suh-wheet!" I exclaimed as I sprang to my feet and quickly pumped my detector coil high overhead to alert Smokey that I had just found a nugget.
"Suh-wheet!" I exclaimed as I sprang to my feet and quickly pumped my detector coil high overhead to alert Smokey that I had just found a nugget.
Prospecting With Color
December 2000
Perhaps no one factor has caused more confusion in the search for ore than the attempt to use color as a guide to prospecting. Yet, there is a reason for every color seen in rocks, so it deserves to be noted.
Perhaps no one factor has caused more confusion in the search for ore than the attempt to use color as a guide to prospecting. Yet, there is a reason for every color seen in rocks, so it deserves to be noted.
Letter to the Editor
December 2000
Follow the chain of letters between everyday prospectors Robert and Lesa Barton of Oregon and Deputy Regional Forester Linda Goodman.
Follow the chain of letters between everyday prospectors Robert and Lesa Barton of Oregon and Deputy Regional Forester Linda Goodman.
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