History & Geology
Alaska: Kodiak Islands Mineral Resources
March 2016 by Jim Halloran
The fresh material is worked and concentrated by the waves on the flat, wide beach platform. The waves wash away the lighter minerals, leaving the heavies near the bluffs and in depressions on the beach.
The Potholes—California’s Oldest Known Mining District
Every time we prospected here we found gold, sometimes some really coarse flakes, but no large nuggets (yet).
Gold Rush Continues in Africa
…some miners are doing exceptionally well… with a few obtaining amounts estimated in the millions of dollars.
Mineralized Faults and Contacts in the Search for Gold
Fault zones and rock contacts are important because the vast majority of gold and silver deposits, as well as those of many other metals, are formed by hot, mineralized water solutions.The Rochester Mining District of Nevada
Only the richest ores could be worked and shipped off for processing at a profit. As a result, early mining in the southern part of the Humboldt Range was short-lived. In the 1880s, placers were discovered in Spring Valley and American Valley on the east side of the range...
Sierra County Gold—Part II
...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
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.
Georgetown CA: A Historically Rich Mother Lode Treasure
The interesting thing about the Mother Lode area is that we can pretty much find at least a little gold in any creek or river (and even in some of the many dry gulches).
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