History & Geology
Butte, Montana—The Richest Hill on Earth
December 2017 by Chris Ralph
I recently had the opportunity to spend a day exploring around Butte, Montana and was amazed by the amount of mining that has taken place there. The old-timers called Butte “the richest hill on earth” and had pretty good reasons for doing so.
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.
The Goldfield Mining District, Nevada—Part I
An example of some of this extraordinary ore was a lot of about four tons from the Florence mine during the last days of a lease that averaged over 300 ounces of gold per ton.
Yesterday's Gold—Today's Mine
It would seem that we are often indeed destined to repeat history. In terms of gold discovery, even with all the advancements that have been made over the years, it seems we are once again on the cusp of returning to the 1800s world of gold mining. Even as you read this, a new gold rush is taking place in a sleepy little town in South Carolina.
The Heavy Minerals in Your Concentrates
The fact that mineral deposits can contribute specific types of heavy minerals is why the analysis of the heavy mineral concentrates in the streams of an area can be an important prospecting technique for finding undiscovered mineral deposits.
Enrichment of Mineral Deposits by Weathering—Part II
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.
Gold From Cemented Gravels
The truth is that cemented gravels are really not all that complex. There is no mystery of how gold grew there or somehow wormed its way into these solid gravels.
A New Look at Old Mines
Exploration companies are actively looking for properties with profitable potential, even if the ground was once cast off as too low in grade to be economically viable. This is especially true in states that are reasonably friendly toward...
Subscription Required:
The Bawl Mill
• Legislative and Regulatory Update
• Ask The Experts - Looking for help smelting gold
• Ask The Experts - Chlorine bleach and vinegar makes a deadly combination
• Ask The Experts - Were there insufficient values to continue mining at this site?
• Watch Out for Split Estates When Filing Your Claim
• Detecting the Fringe Areas
• Conrey Dredge No. 4—Part II
• California: The Land of Big Nuggets—Part I
• Gold Detecting Strategies for Hydraulic Mines and Debris Flows
• New Technology for Extracting Lithium To Be Tested in Nevada
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
Free:
