History & Geology
Prospecting With The Help of Fluvial Geomorphology
March 2011 by Jim Halloran
Quiz yourself about the stream in figure 5. Based on your previous knowledge of where gold is found in a stream and in this article, where do you think you will find the most gold?
The Potholes—California’s Oldest Known Mining District
Every time we prospected here we found gold, sometimes some really coarse flakes, but no large nuggets (yet).
Gold Placers in Italy
Gold is a fairly widespread mineral in the Italian Alps and in the Northern Apennines. It is found both in primary mineralization and in past and recent floods.
Gold Deposition and Gradients of Placer Streams—Part I
When placer miners from the gold rush era began experimenting with the slope of their sluices, they must have pondered the ideal slope for trapping gold in a creek bed too. Logic suggests the same is true for streams...
Gold in The Silver Crown District, Wyoming
When my field assistant Jay Roberts and I entered the mine, it appeared as if someone just walked out of the mine, turned off the lights and never returned.
The Pearce Mineralized Area, Dragoon Mountains, Arizona—Part II
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.
The Amazing Mineral Tourmaline
It is a gemstone, and yet it is also closely associated with many types of metal ores. It's valuable itself but often points toward other valuable minerals—that is certainly something prospectors want to know more about!
"Gold Rush: Alaska" in the Porcupine Mining District
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...
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The Bawl Mill
• So You Want To Be A Full-Time Prospector?
• Ask The Experts—Do I still have rights to this mining claim?
• Ask The Experts—What is a "closed" claim?
• Eastern Arizona: Gold and Base Metal Deposits Part II
• Rediscovering Placerville, California Part II
• Oregon Anti-Dredging Bill
• Mud Men: Pocket Miners of Southwest Oregon Part II
• The Gold of Plumas de Oro
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
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