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Geology and stories from the past

Rock and Formations of the Mother Lode Gold Belt


The faulting, folding and shearing that occurred in the Mother Lode belt has created zones of structurally weak rocks or contacts between different types of rock, which has been favorable for the deposition of gold bearing ores.

Iron Ores and Iron Mining


For more than 40 years, iron ore prices have been decided by private negotiations conducted between the largest of the iron miners and the largest steel producers. These two sides dominate both the spot and contract iron ore markets.

Prospecting for Silver Deposits


In some ways, silver is the forgotten precious metal because it straddles both the world of precious metals and jewelry, while having many important  industrial applications like a base metal. The price of silver reflects both the precious metal investment demand as well as the industrial demand.
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Gold and Rare Earth Elements in New Mexico


We import nearly all of our REEs from China, so it’s critical that we find and continue to develop domestic resources of these elements.

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Q: Is there a correlation between fault zones and mineralization of economic metals?

Prospecting for Pegmatites


…in some cases pegmatites have produced individual mineral crystals that are enormous, attaining lengths of over 40 feet long, and many of the world’s largest mineral crystals are examples that were found within pegmatite deposits.
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Centrifugal concentration is the most effective process for fine gold!

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Gold in clastic black shale

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Sulfides and oxides—what's the difference between the two?

California's Mother Lode Quartz Veins


The actions of the hot, ore-bearing solutions are not limited only to the deposition of material within the walls of the fissures.
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Surface Indications Of Quartz Adularia Epithermal Deposits


I am going to keep to the basics of surface indications and visual clues in the rocks and minerals themselves that help me find gold-bearing veins in this classification of deposits.

Montana’s Rosetta Stone: Discovering Mines In The Treasure State


This is the intelligent way to start modern prospecting. The value of literary research yields challenging outings, specimens, history and geologic research.

Perception of Mining vs. Reality


Many modern mining companies have taken to making a special effort to ensure the goods and services they need are supplied as much as possible out of the local economy.
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One of the Richest Beaches Ever Mined


Everyone has heard of the golden beach at Nome, but Nome did not have the richest beach.

The Gold, Silver and Base Metal Mines of Eureka, Nevada


...the area around Eureka, Nevada is well mineralized and seems to have a bright potential for future production of all sorts of metals.

Jadeite in California


...two jadeite locations in California have been thoroughly researched by geologists. There are no doubt others that lie in wait.

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Ask The Experts


Q: Is this gold or some other metal?

The Paragenesis of Gold & Silver Deposits


…if you are game for digging in and learning more about the intricate details of how gold deposits form, then let’s jump right in.

Placer Mining At Chititu Creek, Alaska


There is reason to believe these stream valleys are still rich with gold, silver and copper.
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Gold Rush Continues in Africa


…some miners are doing exceptionally well… with a few obtaining amounts estimated in the millions of dollars.

Gold Refining In The Ancient World


One thing that stood out for me is that Agricola was very specific about the type of metal or wood in the implements and vessels that were to be used.

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