All Articles
Understanding Geologic Deposit Models
May 2008 by Chris Ralph
Geologists have long noted the similarities of certain types of mineral deposits all across the globe. Similar minerals, similar country rocks, and similar grades of mineralization may occur in several different parts of the world.Additional articles that might interest you...
Niobium and Tantalum
January 2005
Niobium (columbium) and tantalum are related metals that usually occur together and are associated with vanadium on the periodic chart of the elements. Both metals have seen increased usage in high-tech applications in recent years because of increased availability.
Niobium (columbium) and tantalum are related metals that usually occur together and are associated with vanadium on the periodic chart of the elements. Both metals have seen increased usage in high-tech applications in recent years because of increased availability.
Ask the Experts—How do I remove gold from black sands?
April 2007
Q: I’m a fairly new dredger. I was told that the black sands contain fine gold that is tough to see and recover, so I have been saving the black sands when I do my clean up. What method should I use to get the gold out?
Q: I’m a fairly new dredger. I was told that the black sands contain fine gold that is tough to see and recover, so I have been saving the black sands when I do my clean up. What method should I use to get the gold out?
From the Editor
August 2008
You will find a few articles in this issue that you wouldn’t normally expect to see in the Journal. Don’t fret—we’re not changing our focus, but the time seemed right to address a few pressing topics.
You will find a few articles in this issue that you wouldn’t normally expect to see in the Journal. Don’t fret—we’re not changing our focus, but the time seemed right to address a few pressing topics.
Route Planning Using GPS
January 2019
My intention was to end this discussion with waypoints and routes, then I found USGS maps of the Plainfield Quadrangle.
Jackson Hole Gold, Wyoming
September 2000
Placer gold was found near South Pass, at the south end of the Wind River Mountains, in 1842, and lode gold was discovered in the same area in 1867. The principal gold rush was between 1867 and 1874.
Placer gold was found near South Pass, at the south end of the Wind River Mountains, in 1842, and lode gold was discovered in the same area in 1867. The principal gold rush was between 1867 and 1874.
Uranium Deposits
July 2001
The first reported occurrence of uranium in the United States was at Central City, Colorado, in 1871. However, prior to 1922, the ore was mined for its radium content, not uranium.
The first reported occurrence of uranium in the United States was at Central City, Colorado, in 1871. However, prior to 1922, the ore was mined for its radium content, not uranium.
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The Bawl Mill
• Ask the Experts—Why doesn't the 1872 Mining Law apply to all 50 states?
• Ask The Experts—Where do I find information about getting paid for raw gold?
• The Lost Silver Triangle of the Sierra Madre—Part II
• Prospecting for Diamonds
• Avino’s Durango Project
• Success With A Detector
• Horsetail Gold
• The Makorakoza of Zimbabwe—Centuries of Prospecting in Gold-Hosting Dolerites
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
