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...
Detector Brings New Life to An Old Lode Mine
August 2018
…it was immediately evident the previous owner had not been using a detector. During just a few months of working the dumps part-time, he recovered gold in quartz specimens valued in excess of $40,000.
Calcite and Limestone
February 2017
The other distinguishing feature of calcite has to do with its chemistry. Geologists sometimes take a small bottle of dilute hydrochloric acid out into the field with them because calcite reacts with acids to make a bubbly foam.
The other distinguishing feature of calcite has to do with its chemistry. Geologists sometimes take a small bottle of dilute hydrochloric acid out into the field with them because calcite reacts with acids to make a bubbly foam.
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.
Electrum: Gold and Silver Together
January 2016
...if you are out prospecting and find something that looks very much like a nugget but has an odd greenish-gray cast to it, don’t be too quick to simply toss it aside as junk.
...if you are out prospecting and find something that looks very much like a nugget but has an odd greenish-gray cast to it, don’t be too quick to simply toss it aside as junk.
Strategic Metals—Part II
December 2013
There are literally thousands of abandoned wasterock and ore dumps that dot the United States that could hold many tones of strategic metals.
There are literally thousands of abandoned wasterock and ore dumps that dot the United States that could hold many tones of strategic metals.
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.
Eolian Gold Deposits
February 2014
Prospectors who specialize in electronic detecting for nuggets in desert areas are especially interested in this type of deposit, as it yields nuggets that are close to the surface of the ground...
Prospectors who specialize in electronic detecting for nuggets in desert areas are especially interested in this type of deposit, as it yields nuggets that are close to the surface of the ground...
Subscription Required:
The Bawl Mill
• Dredge Mining—Current Situation in Idaho
• Fault Zones and Prospects
• What Are Those Rocks In My Pan?
• Wyoming's Billion Dollar Nugget—The Trilogy Ends
• Melman on Gold & Silver
• Mining Stock Quotes & Mineral and Metal Prices
Free:
Gold Prospecting and Mining Summit
• Legislative and Regulatory Update
• Hands-on at Iowa Hill
• Good Research and Bad Luck
