How To
Montana’s Rosetta Stone: Discovering Mines In The Treasure State
May 2015 by Don Madore
This is the intelligent way to start modern prospecting. The value of literary research yields challenging outings, specimens, history and geologic research.
Additional articles that might interest you...
Care and Lubrication of a Model 13 Laboratory Wilfley Table
June 2016
A Wilfley table works best when all of the mineral being run across it (the pulp) is about the same size. For this reason, I took a good look at each of the samples.
A Wilfley table works best when all of the mineral being run across it (the pulp) is about the same size. For this reason, I took a good look at each of the samples.
Enrichment of Mineral Deposits by Weathering—Part I
March 2016
The exact minerals formed in the concentrated supergene deposits depends much on the type of country rock around the deposit and the chemistry of the deposit itself, but if conditions are right, this process will form some rich patches of bonanza ore, in some places valued at thousands of dollars to the ton.
The exact minerals formed in the concentrated supergene deposits depends much on the type of country rock around the deposit and the chemistry of the deposit itself, but if conditions are right, this process will form some rich patches of bonanza ore, in some places valued at thousands of dollars to the ton.Fine Gold Panning Without Using Mercury
March 2012
The technique I will describe is a much safer alternative and it works. It’s a fine-gold panning technique that eliminates the need for mercury amalgamation of most placer samples.
The technique I will describe is a much safer alternative and it works. It’s a fine-gold panning technique that eliminates the need for mercury amalgamation of most placer samples.
Making Adjustments to Catch Fine Gold
November 2013
This fine gold that is so common is probably the most notorious for eluding our riffles and mattings.
This fine gold that is so common is probably the most notorious for eluding our riffles and mattings.
Exploring Placers with Auger Drills
June 2014
Augers can be used effectively for placer exploration with certain limitations.
Augers can be used effectively for placer exploration with certain limitations.
Using Geologic Maps
December 2015
In order to see what geologic maps can do, we need to think about what we are looking for.
In order to see what geologic maps can do, we need to think about what we are looking for.
Hard Rock Milling: A Matter of Scale
April 2013
Most prospectors understand placer mining a lot better than hard rock mining and don’t realize the amount of work that goes into processing different types of hard rock ore.
Most prospectors understand placer mining a lot better than hard rock mining and don’t realize the amount of work that goes into processing different types of hard rock ore.
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