Copper Deposits of Alaska
February 2014
Only the famous Kennecott copper mine was able to continue operating through the Depression owing to the exceptional richness of its ore.
Only the famous Kennecott copper mine was able to continue operating through the Depression owing to the exceptional richness of its ore.
Divide and Conquer—Detecting Old Placer Grounds with Friends
February 2014
He no sooner had turned around and started moving when I hollered again that I had another nice one.
He no sooner had turned around and started moving when I hollered again that I had another nice one.
Reserves and Resources Explained
February 2014
Reservers and resources are very important to prospectors and miners, but they may be vague terms to some.
Reservers and resources are very important to prospectors and miners, but they may be vague terms to some.
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.
Coprolite—A Prospector's Tale
February 2014
Gold nuggets come in all forms, but I never expected that dinosaur nuggets would too, and at a decent price.
Gold nuggets come in all forms, but I never expected that dinosaur nuggets would too, and at a decent price.
New Mining Regulations in Maine
February 2014
Renewed interest in mining of gold, silver, copper and other metals in Aroostook County's Bald Mountain triggered 2012 legislation requiring the overhaul of the state's two-decade-old mining regulations.
Renewed interest in mining of gold, silver, copper and other metals in Aroostook County's Bald Mountain triggered 2012 legislation requiring the overhaul of the state's two-decade-old mining regulations.
Comstock Mining Gets Approval
February 2014
The approval, which affects 87 acres on the south end of Silver City, allows the company to move forward with exploration to determine the area's mining potential.
The approval, which affects 87 acres on the south end of Silver City, allows the company to move forward with exploration to determine the area's mining potential.
Additional Note Regarding "Strategic Metals—Part II"
January 2014
From the December 2013 issue:
From the December 2013 issue:
Ask the Experts: Big rocks or small cobbles?
January 2014
Sierra County Gold—Part II
January 2014
...we will continue our examination of the rich streams and mining districts, and then take a look at some of the big nuggets that have been found here.
...we will continue our examination of the rich streams and mining districts, and then take a look at some of the big nuggets that have been found here.
The Silver Islet Mountains of Utah
January 2014
I set up my dry washer on the north side of the cut and sampled the bed rock and dumps around me. As I was only sampling, I ran for 20-30 minutes, shoveling from a variety of areas.
I set up my dry washer on the north side of the cut and sampled the bed rock and dumps around me. As I was only sampling, I ran for 20-30 minutes, shoveling from a variety of areas.
Gold Placers of the Kenai Peninsula, Alaska
January 2014
The biggest obstacle is that like many streams on the Kenai Peninsula, high water during the summer months from snow melt and rain can make dredging nearly impossible. The best dredging is in the colder months of the year.
The biggest obstacle is that like many streams on the Kenai Peninsula, high water during the summer months from snow melt and rain can make dredging nearly impossible. The best dredging is in the colder months of the year.
Alternative Gold Leaching Methods
January 2014
The ideal leaching chemical would leave behind what we don't want or need in the ore and take only the valuable metals.
The ideal leaching chemical would leave behind what we don't want or need in the ore and take only the valuable metals.
California Gold Adventure
January 2014
All locations gave up some gold, but one particular section of exposed bedrock with steep, packed crevices kept giving us good, consistent results. We had found our spot.
All locations gave up some gold, but one particular section of exposed bedrock with steep, packed crevices kept giving us good, consistent results. We had found our spot.
Over the Divide
January 2014
Robert Joseph Dahlke
(1939 - 2013)
Robert Joseph Dahlke
(1939 - 2013)
Prospecting for Diamonds in Kimberlite
January 2014
Kimberlite is very difficult for geologists to find, let alone prospectors and rock hounds. This is because kimberlite is rarely exposed on the surface and few people know how to identify the rock.
Kimberlite is very difficult for geologists to find, let alone prospectors and rock hounds. This is because kimberlite is rarely exposed on the surface and few people know how to identify the rock.
Take a Kid Detecting
January 2014
I thought things started off okay until I realized I had forgotten some of my gear and had to return to the house. My troubled start was not helped when my boy came up to me a few minutes after my return to show me his first nugget of the day.
I thought things started off okay until I realized I had forgotten some of my gear and had to return to the house. My troubled start was not helped when my boy came up to me a few minutes after my return to show me his first nugget of the day.
