All Articles
Prospecting for Rare Earth Metals
January 2010 by Chris Ralph
Rare earth metals are critically important to many forms of modern technology, including most green energy saving applications, computers, televisions, and a number of military defense systems.
Additional articles that might interest you...
Determining the Amount of Gold in Rich Ores
February 2016
This is just the type of specimen that could have been easily ignored by the old-time miners. It felt a little heavier in my hand than a chunk of quartz of that size ought to have been.
This is just the type of specimen that could have been easily ignored by the old-time miners. It felt a little heavier in my hand than a chunk of quartz of that size ought to have been.
We’re Still Thinking About It
April 2018
We have learned over the years, of course, that “previous development,” “roadless,” and “local support,” are in the mind of the beholder.
Detecting in Australia's Pilbara Region
February 2007
Situated in northwest Western Australia, Australia’s Pilbara is one of the most isolated and scenic places on earth. The tiny town of Marble Bar, Australia’s hottest town, sits amongst the ancient ranges and is a Mecca for tourists—and gold...
Situated in northwest Western Australia, Australia’s Pilbara is one of the most isolated and scenic places on earth. The tiny town of Marble Bar, Australia’s hottest town, sits amongst the ancient ranges and is a Mecca for tourists—and gold...
Picks & Pans: Red Mountain Planted Nugget Hunt
April 2001
While there are many ways to conduct a planted nugget hunt, this article describes one way that several mining associations can get together and sponsor such an event. In this hunt, the Antelope Valley Treasure Hunter Society’s claim in the Randsburg Mining District was used as the huntfield. It was chosen because...
While there are many ways to conduct a planted nugget hunt, this article describes one way that several mining associations can get together and sponsor such an event. In this hunt, the Antelope Valley Treasure Hunter Society’s claim in the Randsburg Mining District was used as the huntfield. It was chosen because...
Enrichment of Mineral Deposits by Weathering—Part II
April 2016
While both zinc and lead deposits also are enriched by the surface weathering process, in part two we will look at the enrichment process for copper and also gold deposits, and at the interpretation of leached outcrops to figure how rich the concentrated deposits below them may be.
While both zinc and lead deposits also are enriched by the surface weathering process, in part two we will look at the enrichment process for copper and also gold deposits, and at the interpretation of leached outcrops to figure how rich the concentrated deposits below them may be.
The San Juan Mountains, Colorado
September 2001
The rugged San Juan Mountains of Colorado rise to 14,309 feet and were a barrier to overland travel for many years. Precipitation, in the form of summer thundershowers and heavy winter snow, is enough to support coniferous forests.
The rugged San Juan Mountains of Colorado rise to 14,309 feet and were a barrier to overland travel for many years. Precipitation, in the form of summer thundershowers and heavy winter snow, is enough to support coniferous forests.
Gold Near Boulder, Colorado
July 1999
Several mining districts near Boulder, Colorado mark the northeast end of the 240-mile-Iong Colorado Mineral Belt, which cuts diagonally across the Rocky Mountains.
Several mining districts near Boulder, Colorado mark the northeast end of the 240-mile-Iong Colorado Mineral Belt, which cuts diagonally across the Rocky Mountains.
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